./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:59:24,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:59:24,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:59:24,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:59:24,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:59:24,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:59:24,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:59:24,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:59:24,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:59:24,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:59:24,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:59:24,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:59:24,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:59:24,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:59:24,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:59:24,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:59:24,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:59:24,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:59:24,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:59:24,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:59:24,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:59:24,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:59:24,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:59:24,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:59:24,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:59:24,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:59:24,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:59:24,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:59:24,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:59:24,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:59:24,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:59:24,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:59:24,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:59:24,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:59:24,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:59:24,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:59:24,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:59:24,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:59:24,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:59:24,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:59:24,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:59:24,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:59:24,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:59:24,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:59:24,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:59:24,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:59:24,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:59:24,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:59:24,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:59:24,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:59:24,410 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:59:24,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:59:24,412 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:59:24,413 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:59:24,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:59:24,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:59:24,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:59:24,414 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:59:24,414 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:59:24,414 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:59:24,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:59:24,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:59:24,415 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:59:24,415 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:59:24,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:59:24,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:59:24,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:59:24,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:59:24,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:59:24,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:59:24,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:59:24,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:59:24,420 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_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2022-11-18 20:59:24,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:59:24,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:59:24,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:59:24,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:59:24,849 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:59:24,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-18 20:59:24,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data/a661737cd/20690fb603c94e498490e2f9e26f1589/FLAGc08716053 [2022-11-18 20:59:25,658 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:59:25,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-18 20:59:25,679 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data/a661737cd/20690fb603c94e498490e2f9e26f1589/FLAGc08716053 [2022-11-18 20:59:25,943 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data/a661737cd/20690fb603c94e498490e2f9e26f1589 [2022-11-18 20:59:25,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:59:25,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:59:25,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:59:25,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:59:25,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:59:25,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:59:25" (1/1) ... [2022-11-18 20:59:25,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135be82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:25, skipping insertion in model container [2022-11-18 20:59:25,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:59:25" (1/1) ... [2022-11-18 20:59:25,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:59:26,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:59:26,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:59:26,619 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-18 20:59:26,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f4a0315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:26, skipping insertion in model container [2022-11-18 20:59:26,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:59:26,622 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 20:59:26,626 INFO L158 Benchmark]: Toolchain (without parser) took 675.91ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 44.2MB in the beginning and 77.0MB in the end (delta: -32.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:59:26,627 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 81.8MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:59:26,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.60ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 44.0MB in the beginning and 77.0MB in the end (delta: -33.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:59:26,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 81.8MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 669.60ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 44.0MB in the beginning and 77.0MB in the end (delta: -33.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:59:29,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:59:29,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:59:29,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:59:29,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:59:29,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:59:29,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:59:29,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:59:29,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:59:29,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:59:29,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:59:29,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:59:29,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:59:29,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:59:29,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:59:29,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:59:29,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:59:29,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:59:29,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:59:29,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:59:29,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:59:29,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:59:29,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:59:29,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:59:29,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:59:29,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:59:29,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:59:29,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:59:29,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:59:29,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:59:29,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:59:29,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:59:29,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:59:29,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:59:29,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:59:29,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:59:29,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:59:29,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:59:29,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:59:29,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:59:29,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:59:29,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 20:59:29,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:59:29,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:59:29,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:59:29,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:59:29,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:59:29,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:59:29,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:59:29,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:59:29,664 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:59:29,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:59:29,666 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:59:29,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:59:29,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:59:29,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:59:29,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:59:29,669 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:59:29,669 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:59:29,669 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:59:29,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:59:29,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:59:29,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:59:29,671 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:59:29,671 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:59:29,671 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:59:29,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:59:29,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:59:29,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:59:29,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:59:29,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:59:29,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:59:29,675 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:59:29,675 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:59:29,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:59:29,676 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_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2022-11-18 20:59:30,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:59:30,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:59:30,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:59:30,267 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:59:30,270 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:59:30,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-18 20:59:30,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data/a0d93fa7d/22a40686a7604ad78a4ac62b68e72a87/FLAG7239a74e5 [2022-11-18 20:59:31,092 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:59:31,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-18 20:59:31,124 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data/a0d93fa7d/22a40686a7604ad78a4ac62b68e72a87/FLAG7239a74e5 [2022-11-18 20:59:31,350 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/data/a0d93fa7d/22a40686a7604ad78a4ac62b68e72a87 [2022-11-18 20:59:31,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:59:31,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:59:31,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:59:31,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:59:31,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:59:31,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:59:31" (1/1) ... [2022-11-18 20:59:31,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5125c7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:31, skipping insertion in model container [2022-11-18 20:59:31,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:59:31" (1/1) ... [2022-11-18 20:59:31,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:59:31,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:59:31,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:59:32,009 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:59:32,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:59:32,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:59:32,144 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:59:32,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:59:32,290 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:59:32,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32 WrapperNode [2022-11-18 20:59:32,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:59:32,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:59:32,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:59:32,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:59:32,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,372 INFO L138 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2022-11-18 20:59:32,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:59:32,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:59:32,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:59:32,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:59:32,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,476 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:59:32,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:59:32,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:59:32,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:59:32,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (1/1) ... [2022-11-18 20:59:32,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:59:32,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:32,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:59:32,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:59:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:59:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:59:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2022-11-18 20:59:32,602 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2022-11-18 20:59:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:59:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:59:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:59:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:59:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:59:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:59:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:59:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:59:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:59:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:59:32,776 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:59:32,779 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:59:34,078 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:59:34,088 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:59:34,088 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 20:59:34,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:59:34 BoogieIcfgContainer [2022-11-18 20:59:34,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:59:34,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:59:34,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:59:34,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:59:34,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:59:31" (1/3) ... [2022-11-18 20:59:34,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2cd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:59:34, skipping insertion in model container [2022-11-18 20:59:34,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:32" (2/3) ... [2022-11-18 20:59:34,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2cd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:59:34, skipping insertion in model container [2022-11-18 20:59:34,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:59:34" (3/3) ... [2022-11-18 20:59:34,103 INFO L112 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-2.i [2022-11-18 20:59:34,127 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:59:34,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2022-11-18 20:59:34,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:59:34,238 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;@633ae97b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:59:34,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2022-11-18 20:59:34,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 20:59:34,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:34,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 20:59:34,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:34,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash 5052905, now seen corresponding path program 1 times [2022-11-18 20:59:34,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:34,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671371852] [2022-11-18 20:59:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:34,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:34,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:34,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:34,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 20:59:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:34,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:59:34,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:34,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:34,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:34,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671371852] [2022-11-18 20:59:34,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671371852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:34,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:34,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:59:34,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117376940] [2022-11-18 20:59:34,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:34,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:59:34,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:59:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:59:34,465 INFO L87 Difference]: Start difference. First operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:34,533 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2022-11-18 20:59:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:59:34,536 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 20:59:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:34,555 INFO L225 Difference]: With dead ends: 189 [2022-11-18 20:59:34,555 INFO L226 Difference]: Without dead ends: 187 [2022-11-18 20:59:34,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:59:34,565 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:34,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:59:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-18 20:59:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-11-18 20:59:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 92 states have (on average 2.108695652173913) internal successors, (194), 183 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2022-11-18 20:59:34,655 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 4 [2022-11-18 20:59:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:34,656 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2022-11-18 20:59:34,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:34,656 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2022-11-18 20:59:34,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 20:59:34,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:34,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 20:59:34,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:34,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:34,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:34,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:34,859 INFO L85 PathProgramCache]: Analyzing trace with hash 5050693, now seen corresponding path program 1 times [2022-11-18 20:59:34,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:34,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772250390] [2022-11-18 20:59:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:34,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:34,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:34,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:34,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 20:59:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:34,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:59:34,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:35,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 20:59:35,144 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:59:35,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 20:59:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:35,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:35,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:35,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772250390] [2022-11-18 20:59:35,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772250390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:35,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:35,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:59:35,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542575433] [2022-11-18 20:59:35,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:35,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:59:35,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:35,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:59:35,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:59:35,189 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:36,183 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2022-11-18 20:59:36,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:59:36,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 20:59:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:36,187 INFO L225 Difference]: With dead ends: 207 [2022-11-18 20:59:36,187 INFO L226 Difference]: Without dead ends: 207 [2022-11-18 20:59:36,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:59:36,189 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 149 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:36,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 287 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:59:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-18 20:59:36,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2022-11-18 20:59:36,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 177 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2022-11-18 20:59:36,221 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 4 [2022-11-18 20:59:36,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:36,222 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2022-11-18 20:59:36,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2022-11-18 20:59:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 20:59:36,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:36,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 20:59:36,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:36,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:36,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:36,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash 5050694, now seen corresponding path program 1 times [2022-11-18 20:59:36,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:36,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989738155] [2022-11-18 20:59:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:36,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:36,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:36,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:36,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 20:59:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:36,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:59:36,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:36,587 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 5 [2022-11-18 20:59:36,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 20:59:36,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:36,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:59:36,784 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:59:36,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 20:59:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:36,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:36,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:36,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989738155] [2022-11-18 20:59:36,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989738155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:36,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:36,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:59:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106559154] [2022-11-18 20:59:36,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:36,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:59:36,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:36,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:59:36,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:59:36,837 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:37,919 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2022-11-18 20:59:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:59:37,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-18 20:59:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:37,924 INFO L225 Difference]: With dead ends: 197 [2022-11-18 20:59:37,924 INFO L226 Difference]: Without dead ends: 197 [2022-11-18 20:59:37,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:59:37,926 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 28 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:37,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 344 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:59:37,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-18 20:59:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 186. [2022-11-18 20:59:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 182 states have internal predecessors, (195), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 199 transitions. [2022-11-18 20:59:37,943 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 199 transitions. Word has length 4 [2022-11-18 20:59:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:37,944 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 199 transitions. [2022-11-18 20:59:37,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 199 transitions. [2022-11-18 20:59:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:59:37,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:37,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:59:37,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:38,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:38,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash 156571597, now seen corresponding path program 1 times [2022-11-18 20:59:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:38,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822720154] [2022-11-18 20:59:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:38,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:38,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:38,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:38,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 20:59:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:38,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:59:38,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:38,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 20:59:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:38,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:38,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:38,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822720154] [2022-11-18 20:59:38,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822720154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:38,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:38,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:59:38,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774856277] [2022-11-18 20:59:38,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:38,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:59:38,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:38,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:59:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:59:38,323 INFO L87 Difference]: Start difference. First operand 186 states and 199 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:38,805 INFO L93 Difference]: Finished difference Result 209 states and 222 transitions. [2022-11-18 20:59:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:59:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 20:59:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:38,807 INFO L225 Difference]: With dead ends: 209 [2022-11-18 20:59:38,808 INFO L226 Difference]: Without dead ends: 209 [2022-11-18 20:59:38,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:59:38,809 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:38,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 232 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:59:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-18 20:59:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 184. [2022-11-18 20:59:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 180 states have internal predecessors, (192), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 196 transitions. [2022-11-18 20:59:38,839 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 196 transitions. Word has length 5 [2022-11-18 20:59:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:38,839 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 196 transitions. [2022-11-18 20:59:38,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 196 transitions. [2022-11-18 20:59:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:59:38,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:38,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:59:38,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:39,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:39,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash 156571598, now seen corresponding path program 1 times [2022-11-18 20:59:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:39,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235082342] [2022-11-18 20:59:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:39,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:39,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:39,062 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:39,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 20:59:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:39,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:59:39,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:39,177 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 5 [2022-11-18 20:59:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:39,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:39,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:39,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235082342] [2022-11-18 20:59:39,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235082342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:39,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:39,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:59:39,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462987591] [2022-11-18 20:59:39,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:39,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:59:39,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:59:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:59:39,208 INFO L87 Difference]: Start difference. First operand 184 states and 196 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:39,822 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2022-11-18 20:59:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:59:39,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 20:59:39,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:39,825 INFO L225 Difference]: With dead ends: 182 [2022-11-18 20:59:39,825 INFO L226 Difference]: Without dead ends: 182 [2022-11-18 20:59:39,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:59:39,827 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 11 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:39,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 273 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:59:39,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-18 20:59:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-18 20:59:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 97 states have (on average 1.9484536082474226) internal successors, (189), 178 states have internal predecessors, (189), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2022-11-18 20:59:39,837 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 5 [2022-11-18 20:59:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:39,838 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2022-11-18 20:59:39,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2022-11-18 20:59:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 20:59:39,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:39,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:39,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:40,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:40,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:40,055 INFO L85 PathProgramCache]: Analyzing trace with hash 666573431, now seen corresponding path program 1 times [2022-11-18 20:59:40,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:40,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759622999] [2022-11-18 20:59:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:40,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:40,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:40,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:40,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 20:59:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:40,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:59:40,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:40,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 20:59:40,242 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:59:40,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 20:59:40,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:59:40,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:59:40,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 20:59:40,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 20:59:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:40,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:40,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:40,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759622999] [2022-11-18 20:59:40,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759622999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:40,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:40,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:59:40,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536226896] [2022-11-18 20:59:40,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:40,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:59:40,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:40,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:59:40,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:59:40,428 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:41,261 INFO L93 Difference]: Finished difference Result 184 states and 196 transitions. [2022-11-18 20:59:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:59:41,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 20:59:41,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:41,264 INFO L225 Difference]: With dead ends: 184 [2022-11-18 20:59:41,264 INFO L226 Difference]: Without dead ends: 184 [2022-11-18 20:59:41,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:59:41,265 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 7 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:41,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 606 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:59:41,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-18 20:59:41,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-11-18 20:59:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 98 states have (on average 1.9387755102040816) internal successors, (190), 179 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2022-11-18 20:59:41,274 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 10 [2022-11-18 20:59:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:41,274 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2022-11-18 20:59:41,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2022-11-18 20:59:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:59:41,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:41,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:41,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:41,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:41,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:41,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash 623653565, now seen corresponding path program 1 times [2022-11-18 20:59:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:41,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434239072] [2022-11-18 20:59:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:41,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:41,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:41,492 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:41,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 20:59:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:41,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:59:41,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:41,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:41,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:41,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434239072] [2022-11-18 20:59:41,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434239072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:41,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:41,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:59:41,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221544055] [2022-11-18 20:59:41,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:41,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:59:41,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:41,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:59:41,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:59:41,667 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:41,724 INFO L93 Difference]: Finished difference Result 260 states and 275 transitions. [2022-11-18 20:59:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:59:41,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:59:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:41,728 INFO L225 Difference]: With dead ends: 260 [2022-11-18 20:59:41,728 INFO L226 Difference]: Without dead ends: 260 [2022-11-18 20:59:41,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:59:41,735 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 81 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:41,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 548 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:59:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-18 20:59:41,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 224. [2022-11-18 20:59:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.963768115942029) internal successors, (271), 219 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 275 transitions. [2022-11-18 20:59:41,745 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 275 transitions. Word has length 12 [2022-11-18 20:59:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:41,745 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 275 transitions. [2022-11-18 20:59:41,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:41,746 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 275 transitions. [2022-11-18 20:59:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:59:41,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:41,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:41,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:41,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:41,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:41,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569776, now seen corresponding path program 1 times [2022-11-18 20:59:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:41,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224603838] [2022-11-18 20:59:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:41,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:41,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:41,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:41,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 20:59:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:42,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:59:42,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:42,116 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:59:42,117 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 20:59:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:42,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:42,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:42,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224603838] [2022-11-18 20:59:42,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224603838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:42,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:42,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:59:42,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644477130] [2022-11-18 20:59:42,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:42,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:59:42,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:42,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:59:42,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:59:42,152 INFO L87 Difference]: Start difference. First operand 224 states and 275 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:42,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:42,676 INFO L93 Difference]: Finished difference Result 227 states and 271 transitions. [2022-11-18 20:59:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:59:42,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 20:59:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:42,678 INFO L225 Difference]: With dead ends: 227 [2022-11-18 20:59:42,678 INFO L226 Difference]: Without dead ends: 227 [2022-11-18 20:59:42,679 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 [2022-11-18 20:59:42,679 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 62 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:42,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 202 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:59:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-18 20:59:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 218. [2022-11-18 20:59:42,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 144 states have (on average 1.8125) internal successors, (261), 213 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 265 transitions. [2022-11-18 20:59:42,691 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 265 transitions. Word has length 13 [2022-11-18 20:59:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:42,691 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 265 transitions. [2022-11-18 20:59:42,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:42,692 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 265 transitions. [2022-11-18 20:59:42,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:59:42,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:42,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:42,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:42,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:42,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:42,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569775, now seen corresponding path program 1 times [2022-11-18 20:59:42,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:42,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039051395] [2022-11-18 20:59:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:42,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:42,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:42,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:42,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 20:59:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:43,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:59:43,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:43,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:59:43,082 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 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-18 20:59:43,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:59:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:43,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:43,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:43,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039051395] [2022-11-18 20:59:43,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039051395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:43,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:43,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:59:43,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35674650] [2022-11-18 20:59:43,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:43,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:59:43,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:43,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:59:43,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:59:43,117 INFO L87 Difference]: Start difference. First operand 218 states and 265 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:43,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:43,792 INFO L93 Difference]: Finished difference Result 239 states and 279 transitions. [2022-11-18 20:59:43,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:59:43,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 20:59:43,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:43,795 INFO L225 Difference]: With dead ends: 239 [2022-11-18 20:59:43,795 INFO L226 Difference]: Without dead ends: 239 [2022-11-18 20:59:43,795 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 [2022-11-18 20:59:43,796 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 49 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:43,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 212 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:59:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-18 20:59:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 219. [2022-11-18 20:59:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 154 states have (on average 1.655844155844156) internal successors, (255), 214 states have internal predecessors, (255), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2022-11-18 20:59:43,805 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 13 [2022-11-18 20:59:43,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:43,806 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2022-11-18 20:59:43,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2022-11-18 20:59:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:59:43,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:43,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:43,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:44,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:44,011 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:44,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:44,012 INFO L85 PathProgramCache]: Analyzing trace with hash 533828155, now seen corresponding path program 1 times [2022-11-18 20:59:44,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:44,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473309364] [2022-11-18 20:59:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:44,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:44,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:44,014 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:44,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 20:59:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:44,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:59:44,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:44,180 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 20:59:44,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-18 20:59:44,219 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 13 treesize of output 9 [2022-11-18 20:59:44,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2022-11-18 20:59:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:44,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:44,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:44,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473309364] [2022-11-18 20:59:44,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473309364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:44,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:44,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:59:44,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253059503] [2022-11-18 20:59:44,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:44,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:59:44,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:59:44,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:59:44,291 INFO L87 Difference]: Start difference. First operand 219 states and 259 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:45,296 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2022-11-18 20:59:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:59:45,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:59:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:45,300 INFO L225 Difference]: With dead ends: 270 [2022-11-18 20:59:45,300 INFO L226 Difference]: Without dead ends: 270 [2022-11-18 20:59:45,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:59:45,302 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 26 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:45,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 413 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:59:45,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-18 20:59:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 225. [2022-11-18 20:59:45,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.65625) internal successors, (265), 220 states have internal predecessors, (265), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 269 transitions. [2022-11-18 20:59:45,312 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 269 transitions. Word has length 17 [2022-11-18 20:59:45,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:45,313 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 269 transitions. [2022-11-18 20:59:45,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:45,313 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 269 transitions. [2022-11-18 20:59:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:59:45,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:45,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:45,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:45,537 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:45,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash 533828156, now seen corresponding path program 1 times [2022-11-18 20:59:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:45,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83907720] [2022-11-18 20:59:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:45,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:45,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:45,541 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:45,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 20:59:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:59:45,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:45,709 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:59:45,710 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 20:59:45,744 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 13 treesize of output 9 [2022-11-18 20:59:45,773 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 13 treesize of output 9 [2022-11-18 20:59:45,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 9 [2022-11-18 20:59:45,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-11-18 20:59:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:45,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:45,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:45,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83907720] [2022-11-18 20:59:45,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83907720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:45,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:45,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:59:45,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092065393] [2022-11-18 20:59:45,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:45,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:59:45,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:59:45,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:59:45,951 INFO L87 Difference]: Start difference. First operand 225 states and 269 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:47,069 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2022-11-18 20:59:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:59:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:59:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:47,072 INFO L225 Difference]: With dead ends: 227 [2022-11-18 20:59:47,072 INFO L226 Difference]: Without dead ends: 227 [2022-11-18 20:59:47,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:59:47,073 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 6 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:47,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 424 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:59:47,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-18 20:59:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2022-11-18 20:59:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.63125) internal successors, (261), 220 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:47,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 265 transitions. [2022-11-18 20:59:47,086 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 265 transitions. Word has length 17 [2022-11-18 20:59:47,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:47,086 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 265 transitions. [2022-11-18 20:59:47,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:47,087 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 265 transitions. [2022-11-18 20:59:47,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:59:47,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:47,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:47,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:47,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:47,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049946, now seen corresponding path program 1 times [2022-11-18 20:59:47,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:47,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762379693] [2022-11-18 20:59:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:47,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:47,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:47,304 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:47,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 20:59:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:59:47,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:47,540 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:59:47,541 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 19 treesize of output 22 [2022-11-18 20:59:47,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:59:47,727 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:59:47,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 20:59:47,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 15 [2022-11-18 20:59:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:59:47,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:47,917 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_178) c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (_ bv1 1)))) is different from false [2022-11-18 20:59:47,935 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_178) c_create_data_~data~0.base) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 20:59:47,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:47,966 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-18 20:59:47,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 44 treesize of output 32 [2022-11-18 20:59:47,984 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 11 treesize of output 7 [2022-11-18 20:59:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-18 20:59:48,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:48,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762379693] [2022-11-18 20:59:48,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762379693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:59:48,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:59:48,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-11-18 20:59:48,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016364193] [2022-11-18 20:59:48,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:59:48,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:59:48,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:48,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:59:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=52, Unknown=2, NotChecked=30, Total=110 [2022-11-18 20:59:48,058 INFO L87 Difference]: Start difference. First operand 225 states and 265 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:49,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:49,081 INFO L93 Difference]: Finished difference Result 232 states and 269 transitions. [2022-11-18 20:59:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:59:49,083 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:59:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:49,085 INFO L225 Difference]: With dead ends: 232 [2022-11-18 20:59:49,085 INFO L226 Difference]: Without dead ends: 232 [2022-11-18 20:59:49,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=64, Unknown=2, NotChecked=34, Total=132 [2022-11-18 20:59:49,086 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 50 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:49,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 610 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 244 Invalid, 0 Unknown, 297 Unchecked, 0.9s Time] [2022-11-18 20:59:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-18 20:59:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2022-11-18 20:59:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 160 states have (on average 1.61875) internal successors, (259), 219 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 263 transitions. [2022-11-18 20:59:49,098 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 263 transitions. Word has length 22 [2022-11-18 20:59:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:49,098 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 263 transitions. [2022-11-18 20:59:49,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 263 transitions. [2022-11-18 20:59:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:59:49,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:49,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:49,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:49,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:49,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:49,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049945, now seen corresponding path program 1 times [2022-11-18 20:59:49,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:49,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511054268] [2022-11-18 20:59:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:49,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:49,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:49,317 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:49,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 20:59:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:49,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:59:49,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:49,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:59:49,568 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 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-18 20:59:49,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:59:49,617 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 13 treesize of output 9 [2022-11-18 20:59:49,836 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:59:49,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:59:49,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:59:49,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2022-11-18 20:59:49,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 [2022-11-18 20:59:50,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:50,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:50,551 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_223) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv4 32) .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_223) c_create_data_~data~0.base) .cse2) (_ bv8 32) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_224) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-18 20:59:50,630 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_224) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse3 .cse2) (bvadd (_ bv8 32) .cse3 .cse2))))))) is different from false [2022-11-18 20:59:50,729 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_224 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_224) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_223) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2022-11-18 20:59:50,754 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:50,754 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-18 20:59:50,769 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:50,770 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-18 20:59:50,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 62 treesize of output 50 [2022-11-18 20:59:50,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 96 treesize of output 78 [2022-11-18 20:59:50,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-11-18 20:59:50,804 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 66 treesize of output 58 [2022-11-18 20:59:51,016 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:51,017 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-11-18 20:59:51,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 54 treesize of output 36 [2022-11-18 20:59:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-18 20:59:51,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:59:51,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511054268] [2022-11-18 20:59:51,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511054268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:59:51,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:59:51,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-18 20:59:51,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140724740] [2022-11-18 20:59:51,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:59:51,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:59:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:59:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:59:51,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=102, Unknown=3, NotChecked=66, Total=210 [2022-11-18 20:59:51,175 INFO L87 Difference]: Start difference. First operand 224 states and 263 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:55,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:55,339 INFO L93 Difference]: Finished difference Result 236 states and 275 transitions. [2022-11-18 20:59:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:59:55,340 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:59:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:55,343 INFO L225 Difference]: With dead ends: 236 [2022-11-18 20:59:55,344 INFO L226 Difference]: Without dead ends: 236 [2022-11-18 20:59:55,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=159, Unknown=3, NotChecked=84, Total=306 [2022-11-18 20:59:55,349 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 16 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:55,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 917 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 501 Invalid, 0 Unknown, 260 Unchecked, 3.2s Time] [2022-11-18 20:59:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-18 20:59:55,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2022-11-18 20:59:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 229 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:59:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 273 transitions. [2022-11-18 20:59:55,360 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 273 transitions. Word has length 22 [2022-11-18 20:59:55,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:55,361 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 273 transitions. [2022-11-18 20:59:55,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:59:55,361 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 273 transitions. [2022-11-18 20:59:55,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:59:55,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:55,364 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:55,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:55,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:55,584 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 20:59:55,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:55,584 INFO L85 PathProgramCache]: Analyzing trace with hash 767728924, now seen corresponding path program 2 times [2022-11-18 20:59:55,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:59:55,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187358283] [2022-11-18 20:59:55,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:59:55,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:59:55,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:59:55,587 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:59:55,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 20:59:55,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:59:55,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:59:55,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:59:55,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:55,922 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:59:55,922 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 20:59:55,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:59:55,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:59:55,991 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 13 treesize of output 9 [2022-11-18 20:59:56,219 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:59:56,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:59:56,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:59:56,480 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:59:56,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 20:59:56,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 20:59:56,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2022-11-18 20:59:56,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 [2022-11-18 20:59:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:56,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:57,238 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse2) (_ bv8 32) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_285) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-18 20:59:57,312 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_285) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-18 20:59:57,409 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_286) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_285) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-18 20:59:57,560 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284) c_create_data_~data~0.base) .cse2) v_ArrVal_286) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284))) (let ((.cse3 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) .cse3 v_ArrVal_286) c_create_data_~data~0.base) .cse2) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_285) c_create_data_~data~0.base) .cse2)))))))) is different from false [2022-11-18 20:59:57,648 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_284) c_create_data_~data~0.base) .cse3) v_ArrVal_286) c_create_data_~data~0.base) .cse3))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_284))) (let ((.cse4 (select (select .cse5 c_create_data_~data~0.base) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_283) .cse4 v_ArrVal_286) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_285) c_create_data_~data~0.base) .cse3))))))))) is different from false [2022-11-18 20:59:57,760 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_284) c_create_data_~data~0.base) .cse2) v_ArrVal_286) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_284))) (let ((.cse3 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_283) .cse3 v_ArrVal_286) c_create_data_~data~0.base) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_285) c_create_data_~data~0.base) .cse2))))))))) is different from false [2022-11-18 20:59:57,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:57,793 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2022-11-18 20:59:57,811 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:59:57,812 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2022-11-18 20:59:57,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 754 treesize of output 640 [2022-11-18 20:59:57,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1360 treesize of output 1258 [2022-11-18 20:59:57,872 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 1254 treesize of output 1158 [2022-11-18 20:59:57,887 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 1158 treesize of output 958 [2022-11-18 20:59:57,901 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 958 treesize of output 862 [2022-11-18 20:59:57,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 862 treesize of output 830 [2022-11-18 21:00:17,563 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:00:17,563 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2022-11-18 21:00:17,583 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:00:17,583 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2022-11-18 21:00:17,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 102 treesize of output 84 [2022-11-18 21:00:17,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 174 treesize of output 144 [2022-11-18 21:00:17,628 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 102 treesize of output 86 [2022-11-18 21:00:17,637 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 124 treesize of output 100 [2022-11-18 21:00:17,660 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 70 treesize of output 62 [2022-11-18 21:00:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-18 21:00:18,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:18,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187358283] [2022-11-18 21:00:18,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187358283] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:00:18,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:00:18,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2022-11-18 21:00:18,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782889128] [2022-11-18 21:00:18,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:00:18,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 21:00:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:18,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 21:00:18,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=144, Unknown=6, NotChecked=174, Total=380 [2022-11-18 21:00:18,663 INFO L87 Difference]: Start difference. First operand 234 states and 273 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:22,218 INFO L93 Difference]: Finished difference Result 246 states and 285 transitions. [2022-11-18 21:00:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:00:22,221 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 21:00:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:22,222 INFO L225 Difference]: With dead ends: 246 [2022-11-18 21:00:22,222 INFO L226 Difference]: Without dead ends: 246 [2022-11-18 21:00:22,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=85, Invalid=239, Unknown=6, NotChecked=222, Total=552 [2022-11-18 21:00:22,223 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 26 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:22,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1166 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 537 Invalid, 0 Unknown, 549 Unchecked, 2.9s Time] [2022-11-18 21:00:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-18 21:00:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2022-11-18 21:00:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 180 states have (on average 1.55) internal successors, (279), 239 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:00:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 283 transitions. [2022-11-18 21:00:22,230 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 283 transitions. Word has length 27 [2022-11-18 21:00:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:22,232 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 283 transitions. [2022-11-18 21:00:22,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 283 transitions. [2022-11-18 21:00:22,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 21:00:22,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:22,237 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:22,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:22,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:22,456 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:22,457 INFO L85 PathProgramCache]: Analyzing trace with hash 852563911, now seen corresponding path program 3 times [2022-11-18 21:00:22,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:22,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178940359] [2022-11-18 21:00:22,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:00:22,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:22,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:22,459 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:22,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 21:00:22,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 21:00:22,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:00:22,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:00:22,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:22,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:23,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178940359] [2022-11-18 21:00:23,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178940359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:00:23,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:00:23,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-18 21:00:23,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009606591] [2022-11-18 21:00:23,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:00:23,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:00:23,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:00:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:00:23,013 INFO L87 Difference]: Start difference. First operand 244 states and 283 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:23,186 INFO L93 Difference]: Finished difference Result 241 states and 277 transitions. [2022-11-18 21:00:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:00:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 21:00:23,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:23,190 INFO L225 Difference]: With dead ends: 241 [2022-11-18 21:00:23,190 INFO L226 Difference]: Without dead ends: 241 [2022-11-18 21:00:23,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:00:23,191 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 47 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:23,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1243 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:00:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-18 21:00:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2022-11-18 21:00:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 176 states have (on average 1.5397727272727273) internal successors, (271), 234 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:00:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 275 transitions. [2022-11-18 21:00:23,198 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 275 transitions. Word has length 32 [2022-11-18 21:00:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:23,198 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 275 transitions. [2022-11-18 21:00:23,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 275 transitions. [2022-11-18 21:00:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 21:00:23,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:23,199 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:23,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:23,413 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting create_dataErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:23,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829061, now seen corresponding path program 1 times [2022-11-18 21:00:23,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:23,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368901161] [2022-11-18 21:00:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:23,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:23,416 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:23,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 21:00:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:23,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:00:23,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:23,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:00:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:00:23,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:23,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:23,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368901161] [2022-11-18 21:00:23,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368901161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:23,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:23,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:00:23,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123615511] [2022-11-18 21:00:23,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:23,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:00:23,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:00:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:00:23,696 INFO L87 Difference]: Start difference. First operand 239 states and 275 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:24,108 INFO L93 Difference]: Finished difference Result 241 states and 269 transitions. [2022-11-18 21:00:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:00:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-18 21:00:24,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:24,111 INFO L225 Difference]: With dead ends: 241 [2022-11-18 21:00:24,111 INFO L226 Difference]: Without dead ends: 241 [2022-11-18 21:00:24,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:00:24,113 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:24,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 233 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:00:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-18 21:00:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2022-11-18 21:00:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 176 states have (on average 1.4715909090909092) internal successors, (259), 230 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:00:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 263 transitions. [2022-11-18 21:00:24,122 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 263 transitions. Word has length 41 [2022-11-18 21:00:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:24,122 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 263 transitions. [2022-11-18 21:00:24,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 263 transitions. [2022-11-18 21:00:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 21:00:24,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:24,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:24,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 21:00:24,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:24,340 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting create_dataErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829060, now seen corresponding path program 1 times [2022-11-18 21:00:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:24,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57151572] [2022-11-18 21:00:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:24,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:24,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:24,342 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:24,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 21:00:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:00:24,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:24,637 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 5 [2022-11-18 21:00:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:00:24,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:24,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:24,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57151572] [2022-11-18 21:00:24,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57151572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:24,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:24,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:00:24,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993201800] [2022-11-18 21:00:24,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:24,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:00:24,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:24,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:00:24,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:00:24,659 INFO L87 Difference]: Start difference. First operand 235 states and 263 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:25,122 INFO L93 Difference]: Finished difference Result 237 states and 257 transitions. [2022-11-18 21:00:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:00:25,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-18 21:00:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:25,123 INFO L225 Difference]: With dead ends: 237 [2022-11-18 21:00:25,124 INFO L226 Difference]: Without dead ends: 237 [2022-11-18 21:00:25,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:00:25,125 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 18 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:25,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 232 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:00:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-18 21:00:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2022-11-18 21:00:25,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 176 states have (on average 1.4034090909090908) internal successors, (247), 226 states have internal predecessors, (247), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:00:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 251 transitions. [2022-11-18 21:00:25,132 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 251 transitions. Word has length 41 [2022-11-18 21:00:25,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:25,132 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 251 transitions. [2022-11-18 21:00:25,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:00:25,133 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 251 transitions. [2022-11-18 21:00:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 21:00:25,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:25,134 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:25,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:25,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:25,347 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:25,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:25,348 INFO L85 PathProgramCache]: Analyzing trace with hash -663465002, now seen corresponding path program 1 times [2022-11-18 21:00:25,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:25,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882330688] [2022-11-18 21:00:25,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:25,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:25,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:25,351 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:25,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 21:00:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:25,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:00:25,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:25,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:00:25,841 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 13 treesize of output 9 [2022-11-18 21:00:25,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:00:26,140 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-18 21:00:26,140 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 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-18 21:00:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 21:00:26,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:29,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:29,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882330688] [2022-11-18 21:00:29,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882330688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:29,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [277863326] [2022-11-18 21:00:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:29,713 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:29,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:00:29,715 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:00:29,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-18 21:00:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:30,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:00:30,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:30,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:00:30,444 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_780 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_780) |create_data_#t~malloc7.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-18 21:00:30,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:00:30,793 INFO L321 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2022-11-18 21:00:30,793 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 17 treesize of output 31 [2022-11-18 21:00:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:00:30,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:30,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [277863326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:30,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:00:30,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-11-18 21:00:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631259305] [2022-11-18 21:00:30,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:30,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:00:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:00:30,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=80, Unknown=2, NotChecked=18, Total=132 [2022-11-18 21:00:30,813 INFO L87 Difference]: Start difference. First operand 231 states and 251 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:31,233 INFO L93 Difference]: Finished difference Result 290 states and 319 transitions. [2022-11-18 21:00:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:00:31,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-11-18 21:00:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:31,235 INFO L225 Difference]: With dead ends: 290 [2022-11-18 21:00:31,235 INFO L226 Difference]: Without dead ends: 290 [2022-11-18 21:00:31,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=32, Invalid=80, Unknown=2, NotChecked=18, Total=132 [2022-11-18 21:00:31,236 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 87 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:31,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 385 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 273 Unchecked, 0.4s Time] [2022-11-18 21:00:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-18 21:00:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 246. [2022-11-18 21:00:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.4074074074074074) internal successors, (266), 239 states have internal predecessors, (266), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:00:31,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 272 transitions. [2022-11-18 21:00:31,242 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 272 transitions. Word has length 44 [2022-11-18 21:00:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:31,242 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 272 transitions. [2022-11-18 21:00:31,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:31,243 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 272 transitions. [2022-11-18 21:00:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 21:00:31,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:31,244 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:31,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:31,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:31,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:31,658 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:31,659 INFO L85 PathProgramCache]: Analyzing trace with hash -663465001, now seen corresponding path program 1 times [2022-11-18 21:00:31,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:31,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827318045] [2022-11-18 21:00:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:31,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:31,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:31,660 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:31,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 21:00:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:32,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:00:32,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:32,033 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 5 [2022-11-18 21:00:32,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:00:32,176 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 13 treesize of output 9 [2022-11-18 21:00:32,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:00:32,251 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_886 (_ BitVec 32)) (v_arrayElimCell_52 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_886) v_arrayElimCell_52 (_ bv80 32)) |c_#length|))) is different from true [2022-11-18 21:00:32,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:32,583 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:00:32,584 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:00:32,608 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:00:32,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:00:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-18 21:00:32,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:33,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:33,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827318045] [2022-11-18 21:00:33,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827318045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:33,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1310033023] [2022-11-18 21:00:33,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:00:33,092 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:00:33,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-18 21:00:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:33,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:00:33,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:33,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:00:33,932 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 5 [2022-11-18 21:00:34,004 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_1002 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1002) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-18 21:00:34,017 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_1002 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1002) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|))) is different from true [2022-11-18 21:00:34,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:34,343 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:00:34,343 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:00:34,360 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:00:34,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:00:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:00:34,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:34,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1310033023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:34,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:00:34,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-18 21:00:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949920882] [2022-11-18 21:00:34,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:34,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:00:34,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:00:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=73, Unknown=3, NotChecked=54, Total=156 [2022-11-18 21:00:34,396 INFO L87 Difference]: Start difference. First operand 246 states and 272 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:35,244 INFO L93 Difference]: Finished difference Result 308 states and 341 transitions. [2022-11-18 21:00:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:00:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-11-18 21:00:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:35,247 INFO L225 Difference]: With dead ends: 308 [2022-11-18 21:00:35,247 INFO L226 Difference]: Without dead ends: 308 [2022-11-18 21:00:35,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=87, Unknown=3, NotChecked=60, Total=182 [2022-11-18 21:00:35,248 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 75 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 553 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:35,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 470 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 325 Invalid, 0 Unknown, 553 Unchecked, 0.8s Time] [2022-11-18 21:00:35,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-18 21:00:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 246. [2022-11-18 21:00:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.3968253968253967) internal successors, (264), 239 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:00:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 270 transitions. [2022-11-18 21:00:35,255 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 270 transitions. Word has length 44 [2022-11-18 21:00:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:35,256 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 270 transitions. [2022-11-18 21:00:35,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 270 transitions. [2022-11-18 21:00:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 21:00:35,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:35,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:35,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:35,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:35,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:35,671 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:35,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1359492877, now seen corresponding path program 1 times [2022-11-18 21:00:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:35,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751145001] [2022-11-18 21:00:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:35,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:35,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:35,673 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:35,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 21:00:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:35,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:00:35,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:35,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:00:35,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:00:35,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:00:35,983 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 30 treesize of output 39 [2022-11-18 21:00:36,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:00:36,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-18 21:00:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:00:36,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:36,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:36,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751145001] [2022-11-18 21:00:36,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751145001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:36,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:36,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:00:36,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602243781] [2022-11-18 21:00:36,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:36,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:00:36,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:36,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:00:36,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:00:36,157 INFO L87 Difference]: Start difference. First operand 246 states and 270 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:36,806 INFO L93 Difference]: Finished difference Result 288 states and 320 transitions. [2022-11-18 21:00:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:00:36,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-18 21:00:36,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:36,809 INFO L225 Difference]: With dead ends: 288 [2022-11-18 21:00:36,809 INFO L226 Difference]: Without dead ends: 288 [2022-11-18 21:00:36,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:00:36,810 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 28 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:36,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 706 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:00:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-18 21:00:36,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 256. [2022-11-18 21:00:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 199 states have (on average 1.3819095477386936) internal successors, (275), 249 states have internal predecessors, (275), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:00:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 281 transitions. [2022-11-18 21:00:36,816 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 281 transitions. Word has length 46 [2022-11-18 21:00:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:36,817 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 281 transitions. [2022-11-18 21:00:36,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 281 transitions. [2022-11-18 21:00:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 21:00:36,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:36,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:36,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:37,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:37,018 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash 918765395, now seen corresponding path program 1 times [2022-11-18 21:00:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:37,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912757193] [2022-11-18 21:00:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:37,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:37,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:37,021 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:37,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 21:00:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:37,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:00:37,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:00:37,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:37,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:37,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912757193] [2022-11-18 21:00:37,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912757193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:37,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:37,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:00:37,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420614169] [2022-11-18 21:00:37,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:37,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:00:37,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:37,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:00:37,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:00:37,270 INFO L87 Difference]: Start difference. First operand 256 states and 281 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:37,298 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2022-11-18 21:00:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:00:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-18 21:00:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:37,300 INFO L225 Difference]: With dead ends: 264 [2022-11-18 21:00:37,300 INFO L226 Difference]: Without dead ends: 264 [2022-11-18 21:00:37,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:00:37,301 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 3 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:37,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 455 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:00:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-18 21:00:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2022-11-18 21:00:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 205 states have (on average 1.3609756097560977) internal successors, (279), 255 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 21:00:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 285 transitions. [2022-11-18 21:00:37,308 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 285 transitions. Word has length 46 [2022-11-18 21:00:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:37,308 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 285 transitions. [2022-11-18 21:00:37,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 285 transitions. [2022-11-18 21:00:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 21:00:37,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:37,309 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:37,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-18 21:00:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:37,522 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703003, now seen corresponding path program 1 times [2022-11-18 21:00:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:37,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575273585] [2022-11-18 21:00:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:37,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:37,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:37,524 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:37,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 21:00:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:38,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:00:38,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:38,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:00:38,117 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 13 treesize of output 9 [2022-11-18 21:00:38,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:00:38,446 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-18 21:00:38,446 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 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-18 21:00:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 21:00:38,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:42,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:42,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575273585] [2022-11-18 21:00:42,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575273585] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:42,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1780078543] [2022-11-18 21:00:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:42,716 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:42,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:00:42,717 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:00:42,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-18 21:00:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:43,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:00:43,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:43,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 21:00:44,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:44,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:44,175 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 21:00:44,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-18 21:00:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:00:44,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:44,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1780078543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:44,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:00:44,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-18 21:00:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834664639] [2022-11-18 21:00:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:44,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:00:44,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:44,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:00:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=171, Unknown=1, NotChecked=0, Total=210 [2022-11-18 21:00:44,271 INFO L87 Difference]: Start difference. First operand 262 states and 285 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:44,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:44,723 INFO L93 Difference]: Finished difference Result 301 states and 328 transitions. [2022-11-18 21:00:44,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:00:44,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-18 21:00:44,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:44,725 INFO L225 Difference]: With dead ends: 301 [2022-11-18 21:00:44,725 INFO L226 Difference]: Without dead ends: 301 [2022-11-18 21:00:44,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2022-11-18 21:00:44,726 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 12 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:44,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 628 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 153 Unchecked, 0.4s Time] [2022-11-18 21:00:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-18 21:00:44,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2022-11-18 21:00:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 241 states have (on average 1.3195020746887967) internal successors, (318), 291 states have internal predecessors, (318), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:00:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 327 transitions. [2022-11-18 21:00:44,734 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 327 transitions. Word has length 46 [2022-11-18 21:00:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:44,734 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 327 transitions. [2022-11-18 21:00:44,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 327 transitions. [2022-11-18 21:00:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 21:00:44,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:44,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:44,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:44,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:45,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:45,160 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:45,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:45,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703002, now seen corresponding path program 1 times [2022-11-18 21:00:45,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:45,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30727828] [2022-11-18 21:00:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:45,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:45,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:45,163 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:45,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 21:00:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:45,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 21:00:45,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:45,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 21:00:45,640 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 13 treesize of output 9 [2022-11-18 21:00:45,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:00:45,708 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1554 (_ BitVec 32)) (v_arrayElimCell_68 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1554) v_arrayElimCell_68 (_ bv80 32)) |c_#length|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)))) is different from true [2022-11-18 21:00:45,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:46,010 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:00:46,011 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 2 case distinctions, treesize of input 17 treesize of output 29 [2022-11-18 21:00:46,030 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:00:46,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:00:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-18 21:00:46,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:46,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:46,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30727828] [2022-11-18 21:00:46,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30727828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:46,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [450659108] [2022-11-18 21:00:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:46,457 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:46,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:00:46,458 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:00:46,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-18 21:00:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:47,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:00:47,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:47,242 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 5 [2022-11-18 21:00:47,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:47,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 21:00:47,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:00:48,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:48,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:48,470 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:00:48,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-11-18 21:00:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:00:48,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:48,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [450659108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:48,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:00:48,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-18 21:00:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856419923] [2022-11-18 21:00:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:48,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:00:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:00:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=4, NotChecked=30, Total=306 [2022-11-18 21:00:48,686 INFO L87 Difference]: Start difference. First operand 300 states and 327 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:49,618 INFO L93 Difference]: Finished difference Result 301 states and 327 transitions. [2022-11-18 21:00:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:00:49,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-18 21:00:49,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:49,621 INFO L225 Difference]: With dead ends: 301 [2022-11-18 21:00:49,621 INFO L226 Difference]: Without dead ends: 301 [2022-11-18 21:00:49,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=282, Unknown=6, NotChecked=34, Total=380 [2022-11-18 21:00:49,622 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 11 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:49,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 533 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 147 Unchecked, 0.8s Time] [2022-11-18 21:00:49,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-18 21:00:49,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2022-11-18 21:00:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 241 states have (on average 1.3153526970954357) internal successors, (317), 291 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:00:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 326 transitions. [2022-11-18 21:00:49,631 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 326 transitions. Word has length 46 [2022-11-18 21:00:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:49,632 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 326 transitions. [2022-11-18 21:00:49,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 326 transitions. [2022-11-18 21:00:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 21:00:49,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:49,634 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:49,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:49,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:50,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:50,052 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2050875696, now seen corresponding path program 1 times [2022-11-18 21:00:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:50,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854013458] [2022-11-18 21:00:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:50,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:50,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:50,054 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:50,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 21:00:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:50,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:00:50,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:50,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:00:50,454 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 13 treesize of output 9 [2022-11-18 21:00:50,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:00:50,795 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-18 21:00:50,795 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 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-18 21:00:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 21:00:50,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:52,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:00:52,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854013458] [2022-11-18 21:00:52,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854013458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:52,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1135301232] [2022-11-18 21:00:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:52,924 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:52,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:00:52,925 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:00:52,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-18 21:00:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:53,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:00:53,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:53,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:00:53,655 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1892 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (= |c_#valid| (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_1892) |create_data_#t~malloc7.base| (_ bv1 1)))) is different from true [2022-11-18 21:00:57,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:00:58,001 INFO L321 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2022-11-18 21:00:58,001 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 17 treesize of output 31 [2022-11-18 21:00:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:00:58,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:00:58,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1135301232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:58,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:00:58,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-11-18 21:00:58,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166077562] [2022-11-18 21:00:58,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:58,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:00:58,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:00:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:00:58,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=4, NotChecked=16, Total=110 [2022-11-18 21:00:58,017 INFO L87 Difference]: Start difference. First operand 300 states and 326 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:58,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:58,441 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2022-11-18 21:00:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:00:58,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-18 21:00:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:58,444 INFO L225 Difference]: With dead ends: 350 [2022-11-18 21:00:58,444 INFO L226 Difference]: Without dead ends: 350 [2022-11-18 21:00:58,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=4, NotChecked=16, Total=110 [2022-11-18 21:00:58,445 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 88 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 365 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:58,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 395 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 365 Unchecked, 0.4s Time] [2022-11-18 21:00:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-18 21:00:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 310. [2022-11-18 21:00:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 250 states have (on average 1.316) internal successors, (329), 300 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 21:00:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 340 transitions. [2022-11-18 21:00:58,453 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 340 transitions. Word has length 48 [2022-11-18 21:00:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:58,454 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 340 transitions. [2022-11-18 21:00:58,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:00:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 340 transitions. [2022-11-18 21:00:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 21:00:58,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:58,455 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:58,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:58,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:58,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:00:58,871 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:00:58,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:58,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2050875697, now seen corresponding path program 1 times [2022-11-18 21:00:58,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:00:58,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98808878] [2022-11-18 21:00:58,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:58,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:00:58,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:00:58,873 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:00:58,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-18 21:00:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:59,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:00:59,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:59,270 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 5 [2022-11-18 21:00:59,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:00:59,390 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 13 treesize of output 9 [2022-11-18 21:00:59,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:00:59,456 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_79 (_ BitVec 32)) (v_ArrVal_1997 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1997) v_arrayElimCell_79 (_ bv80 32))))) is different from true [2022-11-18 21:00:59,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:00:59,831 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:00:59,831 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:00:59,855 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:00:59,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:00:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-18 21:00:59,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:00,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:00,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98808878] [2022-11-18 21:01:00,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98808878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:00,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [426646279] [2022-11-18 21:01:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:00,312 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:01:00,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:01:00,313 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:01:00,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-18 21:01:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:01,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 21:01:01,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:01,281 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 5 [2022-11-18 21:01:01,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:01:01,356 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_2113 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_2113) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-18 21:01:01,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:01,658 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:01:01,659 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:01:01,676 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:01:01,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:01:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:01,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:01,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [426646279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:01,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:01:01,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2022-11-18 21:01:01,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725800590] [2022-11-18 21:01:01,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:01,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:01:01,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:01,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:01:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=72, Unknown=2, NotChecked=34, Total=132 [2022-11-18 21:01:01,723 INFO L87 Difference]: Start difference. First operand 310 states and 340 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:02,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:02,577 INFO L93 Difference]: Finished difference Result 369 states and 403 transitions. [2022-11-18 21:01:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:01:02,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-18 21:01:02,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:02,579 INFO L225 Difference]: With dead ends: 369 [2022-11-18 21:01:02,580 INFO L226 Difference]: Without dead ends: 369 [2022-11-18 21:01:02,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=103, Unknown=2, NotChecked=42, Total=182 [2022-11-18 21:01:02,580 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 161 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:02,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 358 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 283 Invalid, 0 Unknown, 391 Unchecked, 0.8s Time] [2022-11-18 21:01:02,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-18 21:01:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 309. [2022-11-18 21:01:02,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 249 states have (on average 1.3132530120481927) internal successors, (327), 300 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 21:01:02,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 338 transitions. [2022-11-18 21:01:02,589 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 338 transitions. Word has length 48 [2022-11-18 21:01:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:02,590 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 338 transitions. [2022-11-18 21:01:02,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 338 transitions. [2022-11-18 21:01:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 21:01:02,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:02,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:02,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:02,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:02,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:02,998 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:02,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash 471257990, now seen corresponding path program 1 times [2022-11-18 21:01:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:02,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926121312] [2022-11-18 21:01:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:02,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:02,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:03,000 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:03,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-18 21:01:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:03,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:01:03,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:03,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:03,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:03,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926121312] [2022-11-18 21:01:03,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926121312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:03,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:03,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:03,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936849840] [2022-11-18 21:01:03,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:03,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:03,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:03,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:03,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:03,310 INFO L87 Difference]: Start difference. First operand 309 states and 338 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:03,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:03,697 INFO L93 Difference]: Finished difference Result 308 states and 337 transitions. [2022-11-18 21:01:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:03,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-18 21:01:03,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:03,700 INFO L225 Difference]: With dead ends: 308 [2022-11-18 21:01:03,700 INFO L226 Difference]: Without dead ends: 308 [2022-11-18 21:01:03,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:01:03,700 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 142 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:03,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 217 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:01:03,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-18 21:01:03,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-11-18 21:01:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 249 states have (on average 1.3092369477911647) internal successors, (326), 299 states have internal predecessors, (326), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 21:01:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 337 transitions. [2022-11-18 21:01:03,708 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 337 transitions. Word has length 48 [2022-11-18 21:01:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:03,709 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 337 transitions. [2022-11-18 21:01:03,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:03,709 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 337 transitions. [2022-11-18 21:01:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 21:01:03,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:03,710 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:03,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:03,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:03,910 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:03,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:03,911 INFO L85 PathProgramCache]: Analyzing trace with hash 471257991, now seen corresponding path program 1 times [2022-11-18 21:01:03,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:03,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463777284] [2022-11-18 21:01:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:03,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:03,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:03,913 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:03,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-18 21:01:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:04,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:01:04,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:04,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:04,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:04,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463777284] [2022-11-18 21:01:04,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463777284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:04,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:04,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:01:04,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749651858] [2022-11-18 21:01:04,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:04,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:01:04,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:04,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:01:04,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:01:04,339 INFO L87 Difference]: Start difference. First operand 308 states and 337 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:04,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:04,549 INFO L93 Difference]: Finished difference Result 299 states and 328 transitions. [2022-11-18 21:01:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:04,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-11-18 21:01:04,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:04,551 INFO L225 Difference]: With dead ends: 299 [2022-11-18 21:01:04,551 INFO L226 Difference]: Without dead ends: 299 [2022-11-18 21:01:04,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:04,552 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 219 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:04,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 182 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:01:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-18 21:01:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-11-18 21:01:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 249 states have (on average 1.2730923694779117) internal successors, (317), 290 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 21:01:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 328 transitions. [2022-11-18 21:01:04,559 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 328 transitions. Word has length 48 [2022-11-18 21:01:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:04,559 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 328 transitions. [2022-11-18 21:01:04,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 328 transitions. [2022-11-18 21:01:04,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 21:01:04,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:04,561 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:04,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:04,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:04,774 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095953, now seen corresponding path program 1 times [2022-11-18 21:01:04,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:04,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791422997] [2022-11-18 21:01:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:04,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:04,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:04,776 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:04,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-18 21:01:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:05,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:01:05,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:05,163 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 11 treesize of output 7 [2022-11-18 21:01:05,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2022-11-18 21:01:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:05,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:05,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:05,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791422997] [2022-11-18 21:01:05,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791422997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:05,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:05,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:05,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320312087] [2022-11-18 21:01:05,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:05,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:05,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:05,197 INFO L87 Difference]: Start difference. First operand 299 states and 328 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:06,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:06,001 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2022-11-18 21:01:06,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:06,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-11-18 21:01:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:06,003 INFO L225 Difference]: With dead ends: 320 [2022-11-18 21:01:06,003 INFO L226 Difference]: Without dead ends: 320 [2022-11-18 21:01:06,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:06,004 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 151 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:06,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 359 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:01:06,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-18 21:01:06,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 298. [2022-11-18 21:01:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 249 states have (on average 1.2690763052208835) internal successors, (316), 289 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 21:01:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 327 transitions. [2022-11-18 21:01:06,014 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 327 transitions. Word has length 49 [2022-11-18 21:01:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:06,014 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 327 transitions. [2022-11-18 21:01:06,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 327 transitions. [2022-11-18 21:01:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 21:01:06,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:06,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:06,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:06,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:06,229 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095954, now seen corresponding path program 1 times [2022-11-18 21:01:06,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:06,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849054522] [2022-11-18 21:01:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:06,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:06,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:06,232 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:06,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-18 21:01:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:06,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:01:06,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:06,734 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 11 treesize of output 7 [2022-11-18 21:01:06,743 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 11 treesize of output 7 [2022-11-18 21:01:06,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2022-11-18 21:01:06,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:01:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:06,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:06,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:06,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849054522] [2022-11-18 21:01:06,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849054522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:06,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:06,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:06,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939450139] [2022-11-18 21:01:06,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:06,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:06,804 INFO L87 Difference]: Start difference. First operand 298 states and 327 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:07,592 INFO L93 Difference]: Finished difference Result 336 states and 366 transitions. [2022-11-18 21:01:07,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:07,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-11-18 21:01:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:07,594 INFO L225 Difference]: With dead ends: 336 [2022-11-18 21:01:07,594 INFO L226 Difference]: Without dead ends: 336 [2022-11-18 21:01:07,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:07,595 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 287 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:07,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 311 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:01:07,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-18 21:01:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 297. [2022-11-18 21:01:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 249 states have (on average 1.2650602409638554) internal successors, (315), 288 states have internal predecessors, (315), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 21:01:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 326 transitions. [2022-11-18 21:01:07,603 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 326 transitions. Word has length 49 [2022-11-18 21:01:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:07,603 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 326 transitions. [2022-11-18 21:01:07,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 326 transitions. [2022-11-18 21:01:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 21:01:07,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:07,604 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:07,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:07,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:07,818 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash -498440897, now seen corresponding path program 1 times [2022-11-18 21:01:07,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:07,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053715610] [2022-11-18 21:01:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:07,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:07,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:07,820 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:07,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-18 21:01:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:08,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:01:08,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:08,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:01:08,274 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 13 treesize of output 9 [2022-11-18 21:01:08,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:01:08,605 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-18 21:01:08,605 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 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-18 21:01:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 21:01:08,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:10,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:10,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053715610] [2022-11-18 21:01:10,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053715610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:10,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [618793208] [2022-11-18 21:01:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:10,714 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:01:10,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:01:10,714 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:01:10,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-18 21:01:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:11,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:01:11,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:11,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 21:01:12,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:12,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:12,462 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 21:01:12,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-18 21:01:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:12,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:12,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [618793208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:12,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:01:12,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2022-11-18 21:01:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555152981] [2022-11-18 21:01:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:12,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:01:12,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:01:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2022-11-18 21:01:12,537 INFO L87 Difference]: Start difference. First operand 297 states and 326 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:13,028 INFO L93 Difference]: Finished difference Result 314 states and 345 transitions. [2022-11-18 21:01:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:01:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-11-18 21:01:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:13,030 INFO L225 Difference]: With dead ends: 314 [2022-11-18 21:01:13,030 INFO L226 Difference]: Without dead ends: 314 [2022-11-18 21:01:13,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2022-11-18 21:01:13,031 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 14 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:13,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 636 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 135 Unchecked, 0.4s Time] [2022-11-18 21:01:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-18 21:01:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 307. [2022-11-18 21:01:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 259 states have (on average 1.2625482625482625) internal successors, (327), 297 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 21:01:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 337 transitions. [2022-11-18 21:01:13,039 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 337 transitions. Word has length 50 [2022-11-18 21:01:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:13,039 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 337 transitions. [2022-11-18 21:01:13,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 337 transitions. [2022-11-18 21:01:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 21:01:13,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:13,041 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:13,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:13,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:13,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:13,447 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash -498440896, now seen corresponding path program 1 times [2022-11-18 21:01:13,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:13,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434060016] [2022-11-18 21:01:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:13,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:13,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:13,449 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:13,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-18 21:01:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:13,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:01:13,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:14,129 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 13 treesize of output 9 [2022-11-18 21:01:14,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:01:14,218 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_94 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_2916 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_2916) v_arrayElimCell_94 (_ bv80 32)) |c_#length|))) is different from true [2022-11-18 21:01:14,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:14,589 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:01:14,589 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 2 case distinctions, treesize of input 17 treesize of output 29 [2022-11-18 21:01:14,614 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:01:14,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:01:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-18 21:01:14,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:17,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:17,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434060016] [2022-11-18 21:01:17,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434060016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:17,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1240822655] [2022-11-18 21:01:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:17,183 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:01:17,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:01:17,185 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:01:17,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-18 21:01:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:18,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:01:18,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:18,175 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 5 [2022-11-18 21:01:18,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:18,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 21:01:18,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:01:19,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:19,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:19,508 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:01:19,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-11-18 21:01:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:19,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:19,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1240822655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:19,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:01:19,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-18 21:01:19,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858978478] [2022-11-18 21:01:19,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:19,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:01:19,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:01:19,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=4, NotChecked=30, Total=306 [2022-11-18 21:01:19,714 INFO L87 Difference]: Start difference. First operand 307 states and 337 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:20,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:20,440 INFO L93 Difference]: Finished difference Result 308 states and 337 transitions. [2022-11-18 21:01:20,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:01:20,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-11-18 21:01:20,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:20,443 INFO L225 Difference]: With dead ends: 308 [2022-11-18 21:01:20,443 INFO L226 Difference]: Without dead ends: 308 [2022-11-18 21:01:20,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=58, Invalid=282, Unknown=6, NotChecked=34, Total=380 [2022-11-18 21:01:20,444 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 13 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:20,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 512 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 0 Unknown, 129 Unchecked, 0.6s Time] [2022-11-18 21:01:20,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-18 21:01:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 298. [2022-11-18 21:01:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 251 states have (on average 1.2629482071713147) internal successors, (317), 289 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:01:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 326 transitions. [2022-11-18 21:01:20,451 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 326 transitions. Word has length 50 [2022-11-18 21:01:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:20,451 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 326 transitions. [2022-11-18 21:01:20,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 326 transitions. [2022-11-18 21:01:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 21:01:20,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:20,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:20,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-18 21:01:20,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:20,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:01:20,867 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:20,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash -42553449, now seen corresponding path program 1 times [2022-11-18 21:01:20,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:20,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691625554] [2022-11-18 21:01:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:20,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:20,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:20,869 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:20,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-18 21:01:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:21,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:01:21,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:21,284 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 11 treesize of output 7 [2022-11-18 21:01:21,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2022-11-18 21:01:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:21,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:21,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:21,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691625554] [2022-11-18 21:01:21,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691625554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:21,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:21,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:21,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107793107] [2022-11-18 21:01:21,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:21,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:21,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:21,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:21,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:21,327 INFO L87 Difference]: Start difference. First operand 298 states and 326 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:22,136 INFO L93 Difference]: Finished difference Result 320 states and 349 transitions. [2022-11-18 21:01:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-11-18 21:01:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:22,139 INFO L225 Difference]: With dead ends: 320 [2022-11-18 21:01:22,139 INFO L226 Difference]: Without dead ends: 320 [2022-11-18 21:01:22,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:22,140 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 136 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:22,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 362 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 21:01:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-18 21:01:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 297. [2022-11-18 21:01:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 251 states have (on average 1.2589641434262948) internal successors, (316), 288 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:01:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 325 transitions. [2022-11-18 21:01:22,146 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 325 transitions. Word has length 53 [2022-11-18 21:01:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:22,146 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 325 transitions. [2022-11-18 21:01:22,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 325 transitions. [2022-11-18 21:01:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 21:01:22,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:22,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:22,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:22,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:22,348 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash -42553448, now seen corresponding path program 1 times [2022-11-18 21:01:22,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:22,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560371886] [2022-11-18 21:01:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:22,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:22,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:22,350 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:22,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-18 21:01:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:22,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:01:22,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:22,789 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 11 treesize of output 7 [2022-11-18 21:01:22,796 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 11 treesize of output 7 [2022-11-18 21:01:22,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:01:22,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2022-11-18 21:01:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:22,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:22,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:22,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560371886] [2022-11-18 21:01:22,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560371886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:22,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:22,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:22,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226589769] [2022-11-18 21:01:22,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:22,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:22,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:22,894 INFO L87 Difference]: Start difference. First operand 297 states and 325 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:23,669 INFO L93 Difference]: Finished difference Result 336 states and 365 transitions. [2022-11-18 21:01:23,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:23,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-11-18 21:01:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:23,671 INFO L225 Difference]: With dead ends: 336 [2022-11-18 21:01:23,671 INFO L226 Difference]: Without dead ends: 336 [2022-11-18 21:01:23,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:23,671 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 270 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:23,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 314 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:01:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-18 21:01:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 296. [2022-11-18 21:01:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 251 states have (on average 1.254980079681275) internal successors, (315), 287 states have internal predecessors, (315), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:01:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 324 transitions. [2022-11-18 21:01:23,678 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 324 transitions. Word has length 53 [2022-11-18 21:01:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:23,679 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 324 transitions. [2022-11-18 21:01:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 324 transitions. [2022-11-18 21:01:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 21:01:23,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:23,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:23,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:23,893 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting create_dataErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:23,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982670, now seen corresponding path program 1 times [2022-11-18 21:01:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:23,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314746584] [2022-11-18 21:01:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:23,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:23,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:23,895 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:23,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-18 21:01:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:24,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:01:24,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:24,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:01:24,523 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 21:01:24,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 21:01:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:24,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:24,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:24,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314746584] [2022-11-18 21:01:24,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314746584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:01:24,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:01:24,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2022-11-18 21:01:24,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220643346] [2022-11-18 21:01:24,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:01:24,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:24,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:24,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:24,585 INFO L87 Difference]: Start difference. First operand 296 states and 324 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:25,073 INFO L93 Difference]: Finished difference Result 301 states and 329 transitions. [2022-11-18 21:01:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:01:25,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-18 21:01:25,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:25,075 INFO L225 Difference]: With dead ends: 301 [2022-11-18 21:01:25,075 INFO L226 Difference]: Without dead ends: 301 [2022-11-18 21:01:25,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:01:25,076 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 50 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:25,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 240 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:01:25,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-18 21:01:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 295. [2022-11-18 21:01:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 251 states have (on average 1.247011952191235) internal successors, (313), 286 states have internal predecessors, (313), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:01:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2022-11-18 21:01:25,084 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 53 [2022-11-18 21:01:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:25,085 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2022-11-18 21:01:25,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2022-11-18 21:01:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 21:01:25,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:25,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:25,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:25,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:25,309 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting create_dataErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982671, now seen corresponding path program 1 times [2022-11-18 21:01:25,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:25,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834446924] [2022-11-18 21:01:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:25,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:25,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:25,312 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:25,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-18 21:01:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:01:25,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:25,943 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 5 [2022-11-18 21:01:26,041 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:01:26,042 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 12 treesize of output 14 [2022-11-18 21:01:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:26,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:26,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:26,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834446924] [2022-11-18 21:01:26,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834446924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:01:26,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:01:26,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2022-11-18 21:01:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586536445] [2022-11-18 21:01:26,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:01:26,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:01:26,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:26,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:01:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:26,469 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:26,600 INFO L93 Difference]: Finished difference Result 300 states and 327 transitions. [2022-11-18 21:01:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:01:26,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-18 21:01:26,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:26,602 INFO L225 Difference]: With dead ends: 300 [2022-11-18 21:01:26,602 INFO L226 Difference]: Without dead ends: 300 [2022-11-18 21:01:26,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:26,603 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 16 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:26,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 375 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 111 Unchecked, 0.1s Time] [2022-11-18 21:01:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-18 21:01:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2022-11-18 21:01:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 251 states have (on average 1.2390438247011952) internal successors, (311), 285 states have internal predecessors, (311), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:01:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 320 transitions. [2022-11-18 21:01:26,608 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 320 transitions. Word has length 53 [2022-11-18 21:01:26,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:26,609 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 320 transitions. [2022-11-18 21:01:26,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 320 transitions. [2022-11-18 21:01:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 21:01:26,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:26,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:26,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:26,810 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:26,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156755, now seen corresponding path program 1 times [2022-11-18 21:01:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:26,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147243315] [2022-11-18 21:01:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:26,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:26,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:26,812 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:26,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-18 21:01:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:27,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 21:01:27,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:27,564 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 11 treesize of output 7 [2022-11-18 21:01:27,668 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 11 treesize of output 7 [2022-11-18 21:01:27,710 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 21:01:27,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 26 [2022-11-18 21:01:27,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:01:27,926 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:01:27,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-11-18 21:01:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:01:27,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:27,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:27,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147243315] [2022-11-18 21:01:27,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147243315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:27,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:27,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:01:27,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902965650] [2022-11-18 21:01:27,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:27,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:01:27,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:27,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:01:27,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:01:27,970 INFO L87 Difference]: Start difference. First operand 294 states and 320 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:29,667 INFO L93 Difference]: Finished difference Result 426 states and 473 transitions. [2022-11-18 21:01:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:01:29,668 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-11-18 21:01:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:29,670 INFO L225 Difference]: With dead ends: 426 [2022-11-18 21:01:29,671 INFO L226 Difference]: Without dead ends: 426 [2022-11-18 21:01:29,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:29,671 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 253 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:29,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 605 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 550 Invalid, 0 Unknown, 110 Unchecked, 1.5s Time] [2022-11-18 21:01:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-18 21:01:29,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 332. [2022-11-18 21:01:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 286 states have (on average 1.2692307692307692) internal successors, (363), 318 states have internal predecessors, (363), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (13), 10 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-18 21:01:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 381 transitions. [2022-11-18 21:01:29,685 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 381 transitions. Word has length 54 [2022-11-18 21:01:29,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:29,686 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 381 transitions. [2022-11-18 21:01:29,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 381 transitions. [2022-11-18 21:01:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 21:01:29,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:29,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:29,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:29,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:29,903 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:29,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:29,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156754, now seen corresponding path program 1 times [2022-11-18 21:01:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:29,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475368747] [2022-11-18 21:01:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:29,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:29,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:29,905 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:29,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-18 21:01:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:30,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 21:01:30,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:30,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:01:30,510 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:01:30,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:01:30,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:01:30,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:01:30,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 21:01:30,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 21:01:31,108 INFO L321 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2022-11-18 21:01:31,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2022-11-18 21:01:31,128 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 21:01:31,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-18 21:01:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:31,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:31,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:31,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475368747] [2022-11-18 21:01:31,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475368747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:31,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:31,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 21:01:31,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280747729] [2022-11-18 21:01:31,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:31,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:01:31,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:31,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:01:31,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:01:31,176 INFO L87 Difference]: Start difference. First operand 332 states and 381 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:33,995 INFO L93 Difference]: Finished difference Result 520 states and 585 transitions. [2022-11-18 21:01:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:01:33,996 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-11-18 21:01:33,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:33,999 INFO L225 Difference]: With dead ends: 520 [2022-11-18 21:01:33,999 INFO L226 Difference]: Without dead ends: 520 [2022-11-18 21:01:33,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:01:34,000 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 353 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:34,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 751 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 720 Invalid, 0 Unknown, 126 Unchecked, 2.3s Time] [2022-11-18 21:01:34,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-18 21:01:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 353. [2022-11-18 21:01:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 306 states have (on average 1.2745098039215685) internal successors, (390), 337 states have internal predecessors, (390), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (16), 12 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-18 21:01:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 412 transitions. [2022-11-18 21:01:34,009 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 412 transitions. Word has length 54 [2022-11-18 21:01:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:34,009 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 412 transitions. [2022-11-18 21:01:34,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 412 transitions. [2022-11-18 21:01:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 21:01:34,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:34,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:34,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-18 21:01:34,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:34,229 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:34,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:34,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1610777395, now seen corresponding path program 1 times [2022-11-18 21:01:34,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:34,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158235794] [2022-11-18 21:01:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:34,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:34,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:34,230 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:34,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-18 21:01:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:34,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:01:34,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:34,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:01:35,656 INFO L321 Elim1Store]: treesize reduction 123, result has 21.7 percent of original size [2022-11-18 21:01:35,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 56 [2022-11-18 21:01:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:35,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:39,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:39,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158235794] [2022-11-18 21:01:39,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158235794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:39,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [475661417] [2022-11-18 21:01:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:39,868 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:01:39,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:01:39,869 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:01:39,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2022-11-18 21:01:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:40,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:01:40,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:40,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:01:41,045 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (exists ((v_ArrVal_4280 (_ BitVec 1)) (v_ArrVal_4279 (_ BitVec 1))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_4280) |create_data_#t~malloc7.base| v_ArrVal_4279) |c_#valid|)))) is different from true [2022-11-18 21:01:41,246 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4280 (_ BitVec 1)) (v_ArrVal_4279 (_ BitVec 1)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_4280) |create_data_#t~malloc7.base| v_ArrVal_4279) create_data_~nextData~0.base (_ bv1 1)) |c_#valid|))) is different from true [2022-11-18 21:01:50,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:01:50,217 INFO L321 Elim1Store]: treesize reduction 91, result has 27.2 percent of original size [2022-11-18 21:01:50,217 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 5 case distinctions, treesize of input 29 treesize of output 53 [2022-11-18 21:01:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-18 21:01:50,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:01:55,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [475661417] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:55,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:01:55,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-18 21:01:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982570471] [2022-11-18 21:01:55,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:55,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:55,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:01:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:55,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=170, Unknown=7, NotChecked=58, Total=306 [2022-11-18 21:01:55,498 INFO L87 Difference]: Start difference. First operand 353 states and 412 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:55,714 INFO L93 Difference]: Finished difference Result 407 states and 477 transitions. [2022-11-18 21:01:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-11-18 21:01:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:55,718 INFO L225 Difference]: With dead ends: 407 [2022-11-18 21:01:55,718 INFO L226 Difference]: Without dead ends: 407 [2022-11-18 21:01:55,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=71, Invalid=170, Unknown=7, NotChecked=58, Total=306 [2022-11-18 21:01:55,719 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 64 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:55,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 351 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 224 Unchecked, 0.2s Time] [2022-11-18 21:01:55,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-18 21:01:55,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 382. [2022-11-18 21:01:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 334 states have (on average 1.2754491017964071) internal successors, (426), 364 states have internal predecessors, (426), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (20), 14 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-18 21:01:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 452 transitions. [2022-11-18 21:01:55,727 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 452 transitions. Word has length 55 [2022-11-18 21:01:55,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:55,727 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 452 transitions. [2022-11-18 21:01:55,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:01:55,728 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 452 transitions. [2022-11-18 21:01:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 21:01:55,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:55,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:55,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:55,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:56,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:01:56,146 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:01:56,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1610777396, now seen corresponding path program 1 times [2022-11-18 21:01:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:01:56,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554654864] [2022-11-18 21:01:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:56,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:01:56,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:01:56,148 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:01:56,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-18 21:01:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:56,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 21:01:56,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:56,901 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 5 [2022-11-18 21:01:56,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:01:57,118 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4482 (_ BitVec 32)) (v_ArrVal_4481 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4481) |create_data_#t~malloc7.base| v_ArrVal_4482)))) is different from true [2022-11-18 21:01:57,544 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4482 (_ BitVec 32)) (v_ArrVal_4481 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4481) |create_data_#t~malloc7.base| v_ArrVal_4482) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-18 21:01:57,660 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4482 (_ BitVec 32)) (v_ArrVal_4481 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_4481) |create_data_#t~malloc7.base| v_ArrVal_4482) create_data_~nextData~0.base (_ bv16 32))))) is different from true [2022-11-18 21:01:57,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:57,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:57,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:01:57,847 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-18 21:01:57,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-18 21:01:57,891 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-18 21:01:57,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:01:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-18 21:01:57,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:58,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:01:58,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554654864] [2022-11-18 21:01:58,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554654864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:58,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1541384082] [2022-11-18 21:01:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:58,306 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:01:58,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:01:58,310 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:01:58,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2022-11-18 21:01:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 21:01:59,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:59,719 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 5 [2022-11-18 21:01:59,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:02:00,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:00,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:00,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:00,581 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-18 21:02:00,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-18 21:02:00,640 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-18 21:02:00,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:02:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-18 21:02:00,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:05,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1541384082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:05,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:05,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2022-11-18 21:02:05,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091305267] [2022-11-18 21:02:05,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:05,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:02:05,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:05,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:02:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=70, Unknown=5, NotChecked=54, Total=156 [2022-11-18 21:02:05,008 INFO L87 Difference]: Start difference. First operand 382 states and 452 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:05,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:05,642 INFO L93 Difference]: Finished difference Result 464 states and 549 transitions. [2022-11-18 21:02:05,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:02:05,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-11-18 21:02:05,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:05,645 INFO L225 Difference]: With dead ends: 464 [2022-11-18 21:02:05,645 INFO L226 Difference]: Without dead ends: 464 [2022-11-18 21:02:05,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=39, Invalid=100, Unknown=5, NotChecked=66, Total=210 [2022-11-18 21:02:05,646 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 135 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 699 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:05,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 401 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 699 Unchecked, 0.6s Time] [2022-11-18 21:02:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-11-18 21:02:05,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 390. [2022-11-18 21:02:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 341 states have (on average 1.2727272727272727) internal successors, (434), 371 states have internal predecessors, (434), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (24), 15 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:02:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 464 transitions. [2022-11-18 21:02:05,656 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 464 transitions. Word has length 55 [2022-11-18 21:02:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:05,656 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 464 transitions. [2022-11-18 21:02:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 464 transitions. [2022-11-18 21:02:05,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 21:02:05,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:05,658 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:05,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:05,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0 [2022-11-18 21:02:06,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:06,075 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:02:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:06,076 INFO L85 PathProgramCache]: Analyzing trace with hash 948367782, now seen corresponding path program 1 times [2022-11-18 21:02:06,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:06,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052993955] [2022-11-18 21:02:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:06,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:06,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:06,078 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:02:06,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-18 21:02:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:06,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:02:06,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:06,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:02:06,655 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 13 treesize of output 9 [2022-11-18 21:02:06,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:02:07,046 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-18 21:02:07,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-18 21:02:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:02:07,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:11,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:11,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052993955] [2022-11-18 21:02:11,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052993955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:11,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1079763899] [2022-11-18 21:02:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:11,223 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:11,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:02:11,227 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:02:11,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2022-11-18 21:02:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:12,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:02:12,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:12,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:02:12,180 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4943 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_4943) |create_data_#t~malloc7.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-18 21:02:12,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:02:12,461 INFO L321 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2022-11-18 21:02:12,462 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 17 treesize of output 31 [2022-11-18 21:02:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 5 not checked. [2022-11-18 21:02:12,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 21:02:13,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1079763899] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:13,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:13,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 12 [2022-11-18 21:02:13,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259962986] [2022-11-18 21:02:13,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:13,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:02:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:02:13,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=108, Unknown=3, NotChecked=22, Total=182 [2022-11-18 21:02:13,093 INFO L87 Difference]: Start difference. First operand 390 states and 464 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:13,324 INFO L93 Difference]: Finished difference Result 415 states and 488 transitions. [2022-11-18 21:02:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-11-18 21:02:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:13,327 INFO L225 Difference]: With dead ends: 415 [2022-11-18 21:02:13,327 INFO L226 Difference]: Without dead ends: 415 [2022-11-18 21:02:13,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=49, Invalid=108, Unknown=3, NotChecked=22, Total=182 [2022-11-18 21:02:13,327 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 53 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:13,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 290 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 133 Unchecked, 0.2s Time] [2022-11-18 21:02:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-18 21:02:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 390. [2022-11-18 21:02:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 341 states have (on average 1.2668621700879765) internal successors, (432), 371 states have internal predecessors, (432), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (24), 15 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:02:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 462 transitions. [2022-11-18 21:02:13,334 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 462 transitions. Word has length 56 [2022-11-18 21:02:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:13,335 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 462 transitions. [2022-11-18 21:02:13,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:13,335 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 462 transitions. [2022-11-18 21:02:13,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 21:02:13,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:13,336 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:13,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-18 21:02:13,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (52)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:13,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:13,739 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:02:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash 948367783, now seen corresponding path program 1 times [2022-11-18 21:02:13,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:13,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869903956] [2022-11-18 21:02:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:13,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:13,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:13,741 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:02:13,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-18 21:02:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:14,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:02:14,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:14,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:02:14,288 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 5 [2022-11-18 21:02:14,390 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 13 treesize of output 9 [2022-11-18 21:02:14,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:02:14,463 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_137 (_ BitVec 32)) (v_ArrVal_5069 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5069) v_arrayElimCell_137 (_ bv80 32))))) is different from true [2022-11-18 21:02:14,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:14,827 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:02:14,827 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:02:14,842 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:02:14,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:02:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 5 not checked. [2022-11-18 21:02:14,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:15,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:15,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869903956] [2022-11-18 21:02:15,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869903956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:15,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [96487875] [2022-11-18 21:02:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:15,161 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:15,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:02:15,162 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:02:15,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2022-11-18 21:02:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:02:16,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:16,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:02:16,274 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 5 [2022-11-18 21:02:16,344 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_5198 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5198) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-18 21:02:16,355 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5198 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5198) |create_data_#t~malloc7.base| (_ bv80 32))))) is different from true [2022-11-18 21:02:16,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:16,708 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:02:16,708 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:02:16,725 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:02:16,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:02:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 21:02:16,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:16,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [96487875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:16,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:16,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-18 21:02:16,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638410672] [2022-11-18 21:02:16,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:16,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:16,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=73, Unknown=3, NotChecked=54, Total=156 [2022-11-18 21:02:16,758 INFO L87 Difference]: Start difference. First operand 390 states and 462 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:17,371 INFO L93 Difference]: Finished difference Result 448 states and 527 transitions. [2022-11-18 21:02:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:02:17,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-11-18 21:02:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:17,381 INFO L225 Difference]: With dead ends: 448 [2022-11-18 21:02:17,381 INFO L226 Difference]: Without dead ends: 448 [2022-11-18 21:02:17,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=87, Unknown=3, NotChecked=60, Total=182 [2022-11-18 21:02:17,382 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 63 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 516 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:17,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 381 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 245 Invalid, 0 Unknown, 516 Unchecked, 0.6s Time] [2022-11-18 21:02:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-18 21:02:17,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 388. [2022-11-18 21:02:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 339 states have (on average 1.2625368731563422) internal successors, (428), 371 states have internal predecessors, (428), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:02:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 458 transitions. [2022-11-18 21:02:17,395 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 458 transitions. Word has length 56 [2022-11-18 21:02:17,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:17,395 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 458 transitions. [2022-11-18 21:02:17,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 458 transitions. [2022-11-18 21:02:17,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 21:02:17,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:17,396 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:17,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-18 21:02:17,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (54)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:17,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:17,812 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting create_dataErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:02:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1575996285, now seen corresponding path program 1 times [2022-11-18 21:02:17,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:17,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82519883] [2022-11-18 21:02:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:17,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:17,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:17,814 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:02:17,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-18 21:02:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:18,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:02:18,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:02:18,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:18,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-18 21:02:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:02:18,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:18,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82519883] [2022-11-18 21:02:18,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82519883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:18,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:18,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 21:02:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038407685] [2022-11-18 21:02:18,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:18,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:18,521 INFO L87 Difference]: Start difference. First operand 388 states and 458 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:18,814 INFO L93 Difference]: Finished difference Result 390 states and 459 transitions. [2022-11-18 21:02:18,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:18,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-18 21:02:18,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:18,819 INFO L225 Difference]: With dead ends: 390 [2022-11-18 21:02:18,819 INFO L226 Difference]: Without dead ends: 390 [2022-11-18 21:02:18,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:02:18,819 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 126 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:18,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 563 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:02:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-18 21:02:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 387. [2022-11-18 21:02:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 339 states have (on average 1.2536873156342183) internal successors, (425), 370 states have internal predecessors, (425), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:02:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 455 transitions. [2022-11-18 21:02:18,827 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 455 transitions. Word has length 56 [2022-11-18 21:02:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:18,828 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 455 transitions. [2022-11-18 21:02:18,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:18,828 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 455 transitions. [2022-11-18 21:02:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 21:02:18,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:18,829 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:18,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:19,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:19,044 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:02:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1897094198, now seen corresponding path program 1 times [2022-11-18 21:02:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:19,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784169141] [2022-11-18 21:02:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:19,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:19,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:19,045 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:02:19,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-18 21:02:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:19,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:02:19,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:19,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:02:19,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 8 [2022-11-18 21:02:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:02:19,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:19,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:19,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784169141] [2022-11-18 21:02:19,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784169141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:19,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:19,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:02:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452570173] [2022-11-18 21:02:19,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:19,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:02:19,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:02:19,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:19,592 INFO L87 Difference]: Start difference. First operand 387 states and 455 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:20,042 INFO L93 Difference]: Finished difference Result 425 states and 493 transitions. [2022-11-18 21:02:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:20,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-18 21:02:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:20,047 INFO L225 Difference]: With dead ends: 425 [2022-11-18 21:02:20,047 INFO L226 Difference]: Without dead ends: 425 [2022-11-18 21:02:20,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:02:20,048 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 153 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:20,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 361 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:02:20,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-11-18 21:02:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 389. [2022-11-18 21:02:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 341 states have (on average 1.252199413489736) internal successors, (427), 372 states have internal predecessors, (427), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:02:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 457 transitions. [2022-11-18 21:02:20,069 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 457 transitions. Word has length 57 [2022-11-18 21:02:20,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:20,071 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 457 transitions. [2022-11-18 21:02:20,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 457 transitions. [2022-11-18 21:02:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 21:02:20,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:20,075 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:20,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:20,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:20,288 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:02:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:20,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093746, now seen corresponding path program 1 times [2022-11-18 21:02:20,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:20,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708846853] [2022-11-18 21:02:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:20,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:20,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:20,290 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:02:20,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-18 21:02:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:02:20,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:20,791 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 11 treesize of output 7 [2022-11-18 21:02:20,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2022-11-18 21:02:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:02:20,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:20,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:20,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708846853] [2022-11-18 21:02:20,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708846853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:20,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:20,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:02:20,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132082110] [2022-11-18 21:02:20,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:20,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:20,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:20,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:20,838 INFO L87 Difference]: Start difference. First operand 389 states and 457 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:21,574 INFO L93 Difference]: Finished difference Result 407 states and 475 transitions. [2022-11-18 21:02:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:21,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-18 21:02:21,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:21,577 INFO L225 Difference]: With dead ends: 407 [2022-11-18 21:02:21,577 INFO L226 Difference]: Without dead ends: 407 [2022-11-18 21:02:21,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:02:21,578 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 122 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:21,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 350 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:02:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-18 21:02:21,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 391. [2022-11-18 21:02:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 343 states have (on average 1.2536443148688046) internal successors, (430), 374 states have internal predecessors, (430), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:02:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 460 transitions. [2022-11-18 21:02:21,585 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 460 transitions. Word has length 57 [2022-11-18 21:02:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:21,585 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 460 transitions. [2022-11-18 21:02:21,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 460 transitions. [2022-11-18 21:02:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 21:02:21,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:21,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:21,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:21,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:21,800 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:02:21,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093745, now seen corresponding path program 1 times [2022-11-18 21:02:21,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:21,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652589916] [2022-11-18 21:02:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:21,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:21,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:21,802 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:02:21,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-18 21:02:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:22,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 21:02:22,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:22,478 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 5 [2022-11-18 21:02:22,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:02:22,653 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 13 treesize of output 9 [2022-11-18 21:02:22,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:02:22,722 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_147 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_5755 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5755) v_arrayElimCell_147 (_ bv80 32))))) is different from true [2022-11-18 21:02:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:23,003 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:02:23,004 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:02:23,024 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:02:23,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:02:23,152 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 11 treesize of output 7 [2022-11-18 21:02:23,165 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 11 treesize of output 7 [2022-11-18 21:02:23,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 21 [2022-11-18 21:02:23,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:02:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-18 21:02:23,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:23,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 32 [2022-11-18 21:02:23,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:23,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:23,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:23,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:38,556 WARN L233 SmtUtils]: Spent 14.50s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:02:38,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:38,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652589916] [2022-11-18 21:02:38,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652589916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:38,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [827999795] [2022-11-18 21:02:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:38,558 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:38,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:02:38,559 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:02:38,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2022-11-18 21:02:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:39,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 21:02:39,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:40,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:02:40,220 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 11 treesize of output 7 [2022-11-18 21:02:40,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:40,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-18 21:02:40,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:02:40,495 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:02:40,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-11-18 21:02:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:02:40,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:40,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [827999795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:40,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:40,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 20 [2022-11-18 21:02:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458712462] [2022-11-18 21:02:40,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:40,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:02:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:02:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=457, Unknown=1, NotChecked=42, Total=552 [2022-11-18 21:02:40,607 INFO L87 Difference]: Start difference. First operand 391 states and 460 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:41,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:41,197 INFO L93 Difference]: Finished difference Result 418 states and 491 transitions. [2022-11-18 21:02:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:02:41,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-18 21:02:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:41,200 INFO L225 Difference]: With dead ends: 418 [2022-11-18 21:02:41,200 INFO L226 Difference]: Without dead ends: 418 [2022-11-18 21:02:41,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=64, Invalid=589, Unknown=1, NotChecked=48, Total=702 [2022-11-18 21:02:41,201 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 41 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:41,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1139 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 247 Unchecked, 0.4s Time] [2022-11-18 21:02:41,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-18 21:02:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 399. [2022-11-18 21:02:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 351 states have (on average 1.2535612535612535) internal successors, (440), 381 states have internal predecessors, (440), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (24), 14 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:02:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 470 transitions. [2022-11-18 21:02:41,208 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 470 transitions. Word has length 57 [2022-11-18 21:02:41,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:41,209 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 470 transitions. [2022-11-18 21:02:41,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:02:41,209 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 470 transitions. [2022-11-18 21:02:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 21:02:41,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:41,210 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:41,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:41,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:41,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:41,615 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:02:41,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:41,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854146, now seen corresponding path program 1 times [2022-11-18 21:02:41,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:41,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481108411] [2022-11-18 21:02:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:41,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:41,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:41,617 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:02:41,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-18 21:02:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 21:02:42,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:42,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 21:02:42,517 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 13 treesize of output 9 [2022-11-18 21:02:42,756 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:02:42,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2022-11-18 21:02:42,900 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:02:42,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2022-11-18 21:02:42,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 21 [2022-11-18 21:02:43,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:43,798 INFO L321 Elim1Store]: treesize reduction 96, result has 23.8 percent of original size [2022-11-18 21:02:43,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 52 [2022-11-18 21:02:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:02:43,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:44,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:44,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481108411] [2022-11-18 21:02:44,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481108411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:44,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1841397489] [2022-11-18 21:02:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:44,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:02:44,261 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:02:44,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-18 21:02:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:45,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:02:45,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:45,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 21:02:45,662 WARN L859 $PredicateComparison]: unable to prove that (and (bvult |c_create_data_#t~malloc7.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_6283 (_ BitVec 1)) (v_ArrVal_6282 (_ BitVec 1)) (create_data_~data~0.base (_ BitVec 32))) (and (bvult create_data_~data~0.base |c_#StackHeapBarrier|) (= (store (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_6283) |c_create_data_#t~malloc7.base| v_ArrVal_6282) |c_#valid|))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-18 21:02:46,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:46,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:46,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:46,860 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-18 21:02:46,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 45 [2022-11-18 21:02:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:02:46,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:47,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1841397489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:47,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:47,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2022-11-18 21:02:47,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226679501] [2022-11-18 21:02:47,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:47,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:02:47,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:02:47,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=254, Unknown=1, NotChecked=32, Total=342 [2022-11-18 21:02:47,227 INFO L87 Difference]: Start difference. First operand 399 states and 470 transitions. Second operand has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 16 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:02:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:50,228 INFO L93 Difference]: Finished difference Result 422 states and 494 transitions. [2022-11-18 21:02:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:02:50,229 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 16 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-18 21:02:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:50,231 INFO L225 Difference]: With dead ends: 422 [2022-11-18 21:02:50,231 INFO L226 Difference]: Without dead ends: 422 [2022-11-18 21:02:50,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=107, Invalid=495, Unknown=2, NotChecked=46, Total=650 [2022-11-18 21:02:50,231 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 38 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 591 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:50,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 902 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 591 Unchecked, 0.2s Time] [2022-11-18 21:02:50,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-18 21:02:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 416. [2022-11-18 21:02:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 367 states have (on average 1.2479564032697548) internal successors, (458), 397 states have internal predecessors, (458), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (24), 15 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:02:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 488 transitions. [2022-11-18 21:02:50,239 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 488 transitions. Word has length 57 [2022-11-18 21:02:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:50,239 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 488 transitions. [2022-11-18 21:02:50,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 16 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:02:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 488 transitions. [2022-11-18 21:02:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 21:02:50,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:50,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:50,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:50,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:50,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:50,647 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:02:50,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854147, now seen corresponding path program 1 times [2022-11-18 21:02:50,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:50,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815788391] [2022-11-18 21:02:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:50,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:02:50,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:50,649 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:02:50,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-18 21:02:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:51,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 21:02:51,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:51,554 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 5 treesize of output 3 [2022-11-18 21:02:51,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 21:02:51,670 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 13 treesize of output 9 [2022-11-18 21:02:51,956 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:02:51,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2022-11-18 21:02:52,116 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:02:52,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2022-11-18 21:02:52,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 21 [2022-11-18 21:02:53,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:53,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:53,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:53,548 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-18 21:02:53,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2022-11-18 21:02:53,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:53,595 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2022-11-18 21:02:53,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 20 [2022-11-18 21:02:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 1 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:02:53,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:56,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:56,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815788391] [2022-11-18 21:02:56,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815788391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:56,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [984395442] [2022-11-18 21:02:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:56,188 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:02:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:02:56,191 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:02:56,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-18 21:02:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:57,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:02:57,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:57,753 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 5 [2022-11-18 21:02:57,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:57,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 21:02:58,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:03:04,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:04,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:04,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:04,854 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 21:03:04,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2022-11-18 21:03:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:03:05,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:09,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [984395442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:09,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:09,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2022-11-18 21:03:09,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992305826] [2022-11-18 21:03:09,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:09,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:03:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:03:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:03:09,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=394, Unknown=9, NotChecked=0, Total=462 [2022-11-18 21:03:09,695 INFO L87 Difference]: Start difference. First operand 416 states and 488 transitions. Second operand has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:03:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:11,871 INFO L93 Difference]: Finished difference Result 422 states and 493 transitions. [2022-11-18 21:03:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:03:11,872 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2022-11-18 21:03:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:11,873 INFO L225 Difference]: With dead ends: 422 [2022-11-18 21:03:11,873 INFO L226 Difference]: Without dead ends: 422 [2022-11-18 21:03:11,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=131, Invalid=846, Unknown=15, NotChecked=0, Total=992 [2022-11-18 21:03:11,873 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 49 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:11,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1044 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 280 Unchecked, 0.4s Time] [2022-11-18 21:03:11,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-18 21:03:11,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 416. [2022-11-18 21:03:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 367 states have (on average 1.2452316076294279) internal successors, (457), 397 states have internal predecessors, (457), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (24), 15 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:03:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 487 transitions. [2022-11-18 21:03:11,881 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 487 transitions. Word has length 57 [2022-11-18 21:03:11,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:11,882 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 487 transitions. [2022-11-18 21:03:11,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:03:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 487 transitions. [2022-11-18 21:03:11,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 21:03:11,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:11,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:11,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:12,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:12,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:03:12,299 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting create_dataErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:03:12,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:12,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1611244523, now seen corresponding path program 1 times [2022-11-18 21:03:12,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:12,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220560774] [2022-11-18 21:03:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:12,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:12,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:12,303 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:03:12,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-18 21:03:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:13,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:03:13,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:13,210 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 5 [2022-11-18 21:03:13,305 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:03:13,306 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 12 treesize of output 14 [2022-11-18 21:03:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:03:13,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:03:13,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:03:13,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220560774] [2022-11-18 21:03:13,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220560774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:13,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:13,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2022-11-18 21:03:13,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841175973] [2022-11-18 21:03:13,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:03:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:03:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:03:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:03:13,725 INFO L87 Difference]: Start difference. First operand 416 states and 487 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:14,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:14,464 INFO L93 Difference]: Finished difference Result 417 states and 485 transitions. [2022-11-18 21:03:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:03:14,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-18 21:03:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:14,467 INFO L225 Difference]: With dead ends: 417 [2022-11-18 21:03:14,467 INFO L226 Difference]: Without dead ends: 417 [2022-11-18 21:03:14,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:03:14,467 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 50 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:14,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 359 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 69 Unchecked, 0.7s Time] [2022-11-18 21:03:14,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-18 21:03:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 399. [2022-11-18 21:03:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 352 states have (on average 1.2357954545454546) internal successors, (435), 380 states have internal predecessors, (435), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (24), 15 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:03:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 465 transitions. [2022-11-18 21:03:14,475 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 465 transitions. Word has length 57 [2022-11-18 21:03:14,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:14,475 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 465 transitions. [2022-11-18 21:03:14,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 465 transitions. [2022-11-18 21:03:14,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 21:03:14,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:14,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:14,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:14,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:14,677 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:03:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:14,677 INFO L85 PathProgramCache]: Analyzing trace with hash 848375861, now seen corresponding path program 1 times [2022-11-18 21:03:14,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:14,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731561001] [2022-11-18 21:03:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:14,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:14,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:14,679 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:03:14,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-18 21:03:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:15,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:03:15,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:15,344 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 13 treesize of output 9 [2022-11-18 21:03:15,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:03:15,715 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-18 21:03:15,715 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 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-18 21:03:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:03:15,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:17,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:03:17,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731561001] [2022-11-18 21:03:17,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731561001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:17,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [415532191] [2022-11-18 21:03:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:17,837 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:03:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:03:17,838 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:03:17,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-11-18 21:03:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:19,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:03:19,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:19,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 21:03:19,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:19,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:19,983 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 21:03:19,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-18 21:03:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 21:03:20,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:20,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [415532191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:20,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:03:20,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2022-11-18 21:03:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443359174] [2022-11-18 21:03:20,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:20,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:03:20,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:03:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:03:20,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2022-11-18 21:03:20,084 INFO L87 Difference]: Start difference. First operand 399 states and 465 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:03:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:20,470 INFO L93 Difference]: Finished difference Result 420 states and 488 transitions. [2022-11-18 21:03:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:03:20,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-11-18 21:03:20,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:20,472 INFO L225 Difference]: With dead ends: 420 [2022-11-18 21:03:20,473 INFO L226 Difference]: Without dead ends: 420 [2022-11-18 21:03:20,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2022-11-18 21:03:20,473 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 11 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:20,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 528 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 132 Unchecked, 0.3s Time] [2022-11-18 21:03:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-18 21:03:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 411. [2022-11-18 21:03:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 364 states have (on average 1.2307692307692308) internal successors, (448), 392 states have internal predecessors, (448), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (21), 15 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-18 21:03:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 475 transitions. [2022-11-18 21:03:20,481 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 475 transitions. Word has length 58 [2022-11-18 21:03:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:20,482 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 475 transitions. [2022-11-18 21:03:20,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:03:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 475 transitions. [2022-11-18 21:03:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 21:03:20,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:20,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:20,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:20,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (66)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:20,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:03:20,883 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:03:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash 848375862, now seen corresponding path program 1 times [2022-11-18 21:03:20,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:20,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060014721] [2022-11-18 21:03:20,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:20,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:20,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:20,885 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:03:20,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-18 21:03:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:21,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 21:03:21,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:21,506 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 5 [2022-11-18 21:03:21,620 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 13 treesize of output 9 [2022-11-18 21:03:21,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:03:21,694 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7313 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_arrayElimCell_185 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7313) v_arrayElimCell_185 (_ bv80 32)) |c_#length|))) is different from true [2022-11-18 21:03:22,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:22,055 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:03:22,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2022-11-18 21:03:22,075 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:03:22,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:03:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 5 not checked. [2022-11-18 21:03:22,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:24,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:03:24,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060014721] [2022-11-18 21:03:24,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060014721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:24,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [400163643] [2022-11-18 21:03:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:03:24,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:03:24,580 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:03:24,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-18 21:03:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:25,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:03:25,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:25,743 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 5 [2022-11-18 21:03:25,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:25,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 21:03:26,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:03:27,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:27,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:27,202 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:03:27,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-11-18 21:03:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 21:03:27,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:27,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [400163643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:27,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:03:27,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-18 21:03:27,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008602585] [2022-11-18 21:03:27,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:27,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:03:27,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:03:27,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:03:27,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=225, Unknown=6, NotChecked=30, Total=306 [2022-11-18 21:03:27,367 INFO L87 Difference]: Start difference. First operand 411 states and 475 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:03:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:28,027 INFO L93 Difference]: Finished difference Result 411 states and 474 transitions. [2022-11-18 21:03:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:03:28,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-11-18 21:03:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:28,030 INFO L225 Difference]: With dead ends: 411 [2022-11-18 21:03:28,030 INFO L226 Difference]: Without dead ends: 411 [2022-11-18 21:03:28,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=58, Invalid=280, Unknown=8, NotChecked=34, Total=380 [2022-11-18 21:03:28,031 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 13 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:28,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 495 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 119 Unchecked, 0.5s Time] [2022-11-18 21:03:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-11-18 21:03:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 399. [2022-11-18 21:03:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 353 states have (on average 1.2294617563739376) internal successors, (434), 381 states have internal predecessors, (434), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (20), 14 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-18 21:03:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 460 transitions. [2022-11-18 21:03:28,038 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 460 transitions. Word has length 58 [2022-11-18 21:03:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:28,038 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 460 transitions. [2022-11-18 21:03:28,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:03:28,039 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 460 transitions. [2022-11-18 21:03:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 21:03:28,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:28,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:28,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:28,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:28,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:28,453 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:03:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2094859879, now seen corresponding path program 1 times [2022-11-18 21:03:28,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:28,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245476558] [2022-11-18 21:03:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:28,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:28,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:28,455 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:03:28,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-18 21:03:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:29,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:03:29,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:29,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:03:30,001 INFO L321 Elim1Store]: treesize reduction 123, result has 21.7 percent of original size [2022-11-18 21:03:30,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 56 [2022-11-18 21:03:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:03:30,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:36,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:03:36,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245476558] [2022-11-18 21:03:36,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245476558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:36,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [991841407] [2022-11-18 21:03:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:36,199 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:03:36,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:03:36,200 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:03:36,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-18 21:03:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:37,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:03:37,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:37,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:03:37,849 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_data_#t~malloc7.base| (_ BitVec 32))) (and (exists ((v_ArrVal_7827 (_ BitVec 1))) (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_7827) |create_data_#t~malloc7.base|))) (exists ((v_ArrVal_7829 (_ BitVec 1)) (v_ArrVal_7828 (_ BitVec 1))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_7828) |create_data_#t~malloc7.base| v_ArrVal_7829) |c_#valid|)))) is different from true [2022-11-18 21:03:38,077 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7829 (_ BitVec 1)) (v_ArrVal_7827 (_ BitVec 1)) (v_ArrVal_7828 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= |c_#valid| (store (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_7828) |create_data_#t~malloc7.base| v_ArrVal_7829) c_create_data_~nextData~0.base (_ bv1 1))) (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_7827) |create_data_#t~malloc7.base|)))) is different from true [2022-11-18 21:03:38,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:03:38,448 INFO L321 Elim1Store]: treesize reduction 82, result has 34.4 percent of original size [2022-11-18 21:03:38,448 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 5 case distinctions, treesize of input 38 treesize of output 71 [2022-11-18 21:03:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-18 21:03:38,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:03:39,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [991841407] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:39,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:39,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 13 [2022-11-18 21:03:39,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108361512] [2022-11-18 21:03:39,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:39,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:03:39,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:03:39,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:03:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=107, Unknown=5, NotChecked=46, Total=210 [2022-11-18 21:03:39,422 INFO L87 Difference]: Start difference. First operand 399 states and 460 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:03:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:39,617 INFO L93 Difference]: Finished difference Result 449 states and 518 transitions. [2022-11-18 21:03:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:03:39,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-11-18 21:03:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:39,620 INFO L225 Difference]: With dead ends: 449 [2022-11-18 21:03:39,620 INFO L226 Difference]: Without dead ends: 449 [2022-11-18 21:03:39,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=52, Invalid=107, Unknown=5, NotChecked=46, Total=210 [2022-11-18 21:03:39,621 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 66 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:39,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 298 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 76 Unchecked, 0.2s Time] [2022-11-18 21:03:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-18 21:03:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 411. [2022-11-18 21:03:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 365 states have (on average 1.2328767123287672) internal successors, (450), 393 states have internal predecessors, (450), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (20), 14 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-18 21:03:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 476 transitions. [2022-11-18 21:03:39,628 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 476 transitions. Word has length 59 [2022-11-18 21:03:39,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:39,629 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 476 transitions. [2022-11-18 21:03:39,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:03:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 476 transitions. [2022-11-18 21:03:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 21:03:39,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:39,630 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:39,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (70)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:39,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:40,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:40,045 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:03:40,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2094859878, now seen corresponding path program 1 times [2022-11-18 21:03:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:40,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626221667] [2022-11-18 21:03:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:40,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:40,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:40,047 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:03:40,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-18 21:03:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:40,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:03:40,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:40,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:03:40,875 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 5 [2022-11-18 21:03:40,980 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_8028 (_ BitVec 32)) (v_ArrVal_8027 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8027) |c_create_data_#t~malloc7.base| v_ArrVal_8028) |c_#length|)) (exists ((v_ArrVal_8029 (_ BitVec 1))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_8029) |c_create_data_#t~malloc7.base|))))) is different from true [2022-11-18 21:03:40,999 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8028 (_ BitVec 32)) (v_ArrVal_8027 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8029 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8027) |create_data_#t~malloc7.base| v_ArrVal_8028) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_8029) |create_data_#t~malloc7.base|)))) is different from true [2022-11-18 21:03:41,465 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8028 (_ BitVec 32)) (v_ArrVal_8027 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8029 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_8029) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8027) |create_data_#t~malloc7.base| v_ArrVal_8028) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-18 21:03:41,588 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8028 (_ BitVec 32)) (v_ArrVal_8027 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8029 (_ BitVec 1)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_8029) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8027) |create_data_#t~malloc7.base| v_ArrVal_8028) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-18 21:03:41,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:41,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:41,790 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 21:03:41,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 39 [2022-11-18 21:03:41,843 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2022-11-18 21:03:41,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2022-11-18 21:03:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-18 21:03:41,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:46,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:03:46,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626221667] [2022-11-18 21:03:46,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626221667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:46,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2139098431] [2022-11-18 21:03:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:46,282 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:03:46,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:03:46,283 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:03:46,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2022-11-18 21:03:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:47,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 21:03:47,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:48,014 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 5 [2022-11-18 21:03:48,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:03:48,165 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8231 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8232 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8231) |create_data_#t~malloc7.base| v_ArrVal_8232) |c_#length|))) is different from true [2022-11-18 21:03:48,595 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8231 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8232 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8231) |create_data_#t~malloc7.base| v_ArrVal_8232) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-18 21:03:48,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:48,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:48,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:48,901 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-18 21:03:48,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-18 21:03:48,946 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-18 21:03:48,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:03:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-18 21:03:48,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:52,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2139098431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:52,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:52,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-18 21:03:52,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360847090] [2022-11-18 21:03:52,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:52,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 21:03:52,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:03:52,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 21:03:52,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=73, Unknown=7, NotChecked=126, Total=240 [2022-11-18 21:03:52,956 INFO L87 Difference]: Start difference. First operand 411 states and 476 transitions. Second operand has 13 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:03:53,083 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8028 (_ BitVec 32)) (v_ArrVal_8027 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8029 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8027) |create_data_#t~malloc7.base| v_ArrVal_8028) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_8029) |create_data_#t~malloc7.base|)))) (exists ((v_ArrVal_8231 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8232 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8231) |create_data_#t~malloc7.base| v_ArrVal_8232) |c_#length|)))) is different from true [2022-11-18 21:03:53,212 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8231 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8232 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8231) |create_data_#t~malloc7.base| v_ArrVal_8232) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_8028 (_ BitVec 32)) (v_ArrVal_8027 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8029 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_8029) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8027) |create_data_#t~malloc7.base| v_ArrVal_8028) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|)))) is different from true [2022-11-18 21:03:53,320 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_8028 (_ BitVec 32)) (v_ArrVal_8027 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8029 (_ BitVec 1)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_8029) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8027) |create_data_#t~malloc7.base| v_ArrVal_8028) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_8231 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_8232 (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_8231) |create_data_#t~malloc7.base| v_ArrVal_8232) create_data_~nextData~0.base (_ bv16 32)) |c_#length|)))) is different from true [2022-11-18 21:03:53,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:53,739 INFO L93 Difference]: Finished difference Result 572 states and 662 transitions. [2022-11-18 21:03:53,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:03:53,740 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2022-11-18 21:03:53,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:53,742 INFO L225 Difference]: With dead ends: 572 [2022-11-18 21:03:53,742 INFO L226 Difference]: Without dead ends: 572 [2022-11-18 21:03:53,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=52, Invalid=106, Unknown=10, NotChecked=252, Total=420 [2022-11-18 21:03:53,743 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 192 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1488 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:53,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 550 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 1488 Unchecked, 0.6s Time] [2022-11-18 21:03:53,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-18 21:03:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 425. [2022-11-18 21:03:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 378 states have (on average 1.2275132275132274) internal successors, (464), 407 states have internal predecessors, (464), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (24), 14 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 21:03:53,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 494 transitions. [2022-11-18 21:03:53,752 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 494 transitions. Word has length 59 [2022-11-18 21:03:53,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:53,753 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 494 transitions. [2022-11-18 21:03:53,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:03:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 494 transitions. [2022-11-18 21:03:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 21:03:53,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:53,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:53,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (72)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:53,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:54,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:54,175 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:03:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1179322216, now seen corresponding path program 1 times [2022-11-18 21:03:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:54,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769193586] [2022-11-18 21:03:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:54,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:03:54,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:54,177 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:03:54,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-18 21:03:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:55,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 21:03:55,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:55,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:03:55,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 21:03:55,345 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 13 treesize of output 9 [2022-11-18 21:03:55,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 21:03:57,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:57,158 INFO L321 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2022-11-18 21:03:57,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 49 [2022-11-18 21:03:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 21:03:57,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:57,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:03:57,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769193586] [2022-11-18 21:03:57,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769193586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:57,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1252094196] [2022-11-18 21:03:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:57,528 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:03:57,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:03:57,529 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:03:57,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (74)] Waiting until timeout for monitored process [2022-11-18 21:03:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:59,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:03:59,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:00,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 21:04:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:01,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:01,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:01,943 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-18 21:04:01,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 45 [2022-11-18 21:04:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:04:02,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:02,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1252094196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:02,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:04:02,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2022-11-18 21:04:02,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709852970] [2022-11-18 21:04:02,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:04:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:04:02,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:04:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=381, Unknown=7, NotChecked=0, Total=462 [2022-11-18 21:04:02,349 INFO L87 Difference]: Start difference. First operand 425 states and 494 transitions. Second operand has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 19 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:04:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:03,616 INFO L93 Difference]: Finished difference Result 449 states and 519 transitions. [2022-11-18 21:04:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:04:03,616 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 19 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-11-18 21:04:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:03,619 INFO L225 Difference]: With dead ends: 449 [2022-11-18 21:04:03,619 INFO L226 Difference]: Without dead ends: 449 [2022-11-18 21:04:03,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=122, Invalid=622, Unknown=12, NotChecked=0, Total=756 [2022-11-18 21:04:03,620 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 51 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:03,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1077 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 379 Unchecked, 0.4s Time] [2022-11-18 21:04:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-18 21:04:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 425. [2022-11-18 21:04:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 378 states have (on average 1.2275132275132274) internal successors, (464), 406 states have internal predecessors, (464), 6 states have call successors, (6), 3 states have call predecessors, (6), 9 states have return successors, (21), 15 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-18 21:04:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 491 transitions. [2022-11-18 21:04:03,630 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 491 transitions. Word has length 61 [2022-11-18 21:04:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:03,631 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 491 transitions. [2022-11-18 21:04:03,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 19 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:04:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 491 transitions. [2022-11-18 21:04:03,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 21:04:03,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:03,632 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:03,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:03,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (74)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:04,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:04:04,052 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:04:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1179322217, now seen corresponding path program 1 times [2022-11-18 21:04:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:04:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942718541] [2022-11-18 21:04:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:04,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:04:04,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:04:04,054 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:04:04,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-18 21:04:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:05,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 21:04:05,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:05,045 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 5 [2022-11-18 21:04:05,167 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 5 treesize of output 3 [2022-11-18 21:04:05,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 21:04:05,308 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 13 treesize of output 9 [2022-11-18 21:04:05,672 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:04:05,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2022-11-18 21:04:05,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 21 [2022-11-18 21:04:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:07,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:07,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:07,343 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-18 21:04:07,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2022-11-18 21:04:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:07,402 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2022-11-18 21:04:07,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 20 [2022-11-18 21:04:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 21:04:07,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:11,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:04:11,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942718541] [2022-11-18 21:04:11,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942718541] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:11,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1587988788] [2022-11-18 21:04:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:11,047 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:04:11,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:04:11,048 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:04:11,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (76)] Waiting until timeout for monitored process [2022-11-18 21:04:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:13,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:04:13,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:13,131 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 5 [2022-11-18 21:04:13,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:13,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 21:04:13,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:04:15,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:15,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:15,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:15,994 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 21:04:15,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2022-11-18 21:04:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:04:16,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:21,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1587988788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:21,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:04:21,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2022-11-18 21:04:21,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297277296] [2022-11-18 21:04:21,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:21,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:04:21,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:04:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:04:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=397, Unknown=6, NotChecked=0, Total=462 [2022-11-18 21:04:21,592 INFO L87 Difference]: Start difference. First operand 425 states and 491 transitions. Second operand has 19 states, 18 states have (on average 5.722222222222222) internal successors, (103), 19 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:04:29,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:29,253 INFO L93 Difference]: Finished difference Result 432 states and 497 transitions. [2022-11-18 21:04:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:04:29,255 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.722222222222222) internal successors, (103), 19 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-11-18 21:04:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:29,257 INFO L225 Difference]: With dead ends: 432 [2022-11-18 21:04:29,257 INFO L226 Difference]: Without dead ends: 432 [2022-11-18 21:04:29,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=131, Invalid=847, Unknown=14, NotChecked=0, Total=992 [2022-11-18 21:04:29,258 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 54 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:29,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1105 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 287 Unchecked, 0.6s Time] [2022-11-18 21:04:29,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-18 21:04:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 405. [2022-11-18 21:04:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 359 states have (on average 1.2311977715877438) internal successors, (442), 387 states have internal predecessors, (442), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (20), 14 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-18 21:04:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 468 transitions. [2022-11-18 21:04:29,268 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 468 transitions. Word has length 61 [2022-11-18 21:04:29,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:29,268 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 468 transitions. [2022-11-18 21:04:29,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.722222222222222) internal successors, (103), 19 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:04:29,269 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 468 transitions. [2022-11-18 21:04:29,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 21:04:29,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:29,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:29,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Ended with exit code 0 [2022-11-18 21:04:29,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (76)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:29,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:04:29,691 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:04:29,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:29,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1611932791, now seen corresponding path program 1 times [2022-11-18 21:04:29,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:04:29,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6124190] [2022-11-18 21:04:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:29,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:04:29,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:04:29,693 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:04:29,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-18 21:04:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:30,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 21:04:30,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:30,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:04:30,555 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 5 [2022-11-18 21:04:30,794 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 13 treesize of output 9 [2022-11-18 21:04:30,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:04:30,880 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_222 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_9183 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9183) v_arrayElimCell_222 (_ bv80 32)) |c_#length|))) is different from true [2022-11-18 21:04:31,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:31,228 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:04:31,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:04:31,257 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:04:31,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:04:31,414 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 11 treesize of output 7 [2022-11-18 21:04:31,422 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 11 treesize of output 7 [2022-11-18 21:04:31,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 21 [2022-11-18 21:04:31,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:04:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-18 21:04:31,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:32,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 32 [2022-11-18 21:04:32,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:32,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:32,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:32,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:39,081 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:04:39,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:04:39,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6124190] [2022-11-18 21:04:39,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6124190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:39,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [65803533] [2022-11-18 21:04:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:39,083 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:04:39,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:04:39,084 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:04:39,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (78)] Waiting until timeout for monitored process [2022-11-18 21:04:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:40,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 21:04:40,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:40,883 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 5 [2022-11-18 21:04:40,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:04:41,149 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (exists ((v_ArrVal_9313 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9313) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)))) is different from true [2022-11-18 21:04:41,164 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9313 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9313) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|))) is different from true [2022-11-18 21:04:41,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:41,552 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:04:41,552 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:04:41,596 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:04:41,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:04:41,804 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 11 treesize of output 7 [2022-11-18 21:04:41,821 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 11 treesize of output 7 [2022-11-18 21:04:42,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 21 [2022-11-18 21:04:42,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:04:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:04:42,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:42,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [65803533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:42,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:04:42,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 16 [2022-11-18 21:04:42,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781181004] [2022-11-18 21:04:42,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:42,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:04:42,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:04:42,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:04:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=257, Unknown=3, NotChecked=102, Total=420 [2022-11-18 21:04:42,426 INFO L87 Difference]: Start difference. First operand 405 states and 468 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:04:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:43,008 INFO L93 Difference]: Finished difference Result 493 states and 587 transitions. [2022-11-18 21:04:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:04:43,008 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-11-18 21:04:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:43,011 INFO L225 Difference]: With dead ends: 493 [2022-11-18 21:04:43,011 INFO L226 Difference]: Without dead ends: 493 [2022-11-18 21:04:43,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=58, Invalid=257, Unknown=3, NotChecked=102, Total=420 [2022-11-18 21:04:43,011 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 32 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 464 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:43,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 391 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 464 Unchecked, 0.6s Time] [2022-11-18 21:04:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-11-18 21:04:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 473. [2022-11-18 21:04:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 423 states have (on average 1.2316784869976358) internal successors, (521), 452 states have internal predecessors, (521), 8 states have call successors, (8), 3 states have call predecessors, (8), 10 states have return successors, (34), 17 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-18 21:04:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 563 transitions. [2022-11-18 21:04:43,022 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 563 transitions. Word has length 61 [2022-11-18 21:04:43,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:43,022 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 563 transitions. [2022-11-18 21:04:43,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:04:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 563 transitions. [2022-11-18 21:04:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 21:04:43,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:43,024 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:43,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (78)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:43,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:43,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:04:43,445 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:04:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:43,445 INFO L85 PathProgramCache]: Analyzing trace with hash 939726753, now seen corresponding path program 1 times [2022-11-18 21:04:43,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:04:43,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139700212] [2022-11-18 21:04:43,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:43,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:04:43,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:04:43,446 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:04:43,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-18 21:04:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:04:44,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:44,256 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 11 treesize of output 7 [2022-11-18 21:04:44,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2022-11-18 21:04:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:04:44,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:44,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:04:44,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139700212] [2022-11-18 21:04:44,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139700212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:44,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:44,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:04:44,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866791067] [2022-11-18 21:04:44,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:44,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:04:44,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:04:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:04:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:04:44,348 INFO L87 Difference]: Start difference. First operand 473 states and 563 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:04:45,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:45,357 INFO L93 Difference]: Finished difference Result 488 states and 577 transitions. [2022-11-18 21:04:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:04:45,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-11-18 21:04:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:45,360 INFO L225 Difference]: With dead ends: 488 [2022-11-18 21:04:45,360 INFO L226 Difference]: Without dead ends: 488 [2022-11-18 21:04:45,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:04:45,361 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 131 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:45,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 335 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 21:04:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-18 21:04:45,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 476. [2022-11-18 21:04:45,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 426 states have (on average 1.232394366197183) internal successors, (525), 455 states have internal predecessors, (525), 8 states have call successors, (8), 3 states have call predecessors, (8), 10 states have return successors, (34), 17 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-18 21:04:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 567 transitions. [2022-11-18 21:04:45,371 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 567 transitions. Word has length 64 [2022-11-18 21:04:45,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:45,371 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 567 transitions. [2022-11-18 21:04:45,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:04:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 567 transitions. [2022-11-18 21:04:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 21:04:45,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:45,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:45,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:45,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:04:45,573 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:04:45,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:45,573 INFO L85 PathProgramCache]: Analyzing trace with hash 939726754, now seen corresponding path program 1 times [2022-11-18 21:04:45,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:04:45,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234475211] [2022-11-18 21:04:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:45,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:04:45,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:04:45,575 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:04:45,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-18 21:04:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:46,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:04:46,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:46,490 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 11 treesize of output 7 [2022-11-18 21:04:46,501 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 11 treesize of output 7 [2022-11-18 21:04:46,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2022-11-18 21:04:46,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:04:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:04:46,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:04:46,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:04:46,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234475211] [2022-11-18 21:04:46,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234475211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:46,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:46,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:04:46,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247275895] [2022-11-18 21:04:46,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:46,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:04:46,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:04:46,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:04:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:04:46,699 INFO L87 Difference]: Start difference. First operand 476 states and 567 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:04:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:47,807 INFO L93 Difference]: Finished difference Result 504 states and 593 transitions. [2022-11-18 21:04:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:04:47,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-11-18 21:04:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:47,810 INFO L225 Difference]: With dead ends: 504 [2022-11-18 21:04:47,810 INFO L226 Difference]: Without dead ends: 504 [2022-11-18 21:04:47,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:04:47,810 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 160 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:47,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 333 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 21:04:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-18 21:04:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 476. [2022-11-18 21:04:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 426 states have (on average 1.2300469483568075) internal successors, (524), 455 states have internal predecessors, (524), 8 states have call successors, (8), 3 states have call predecessors, (8), 10 states have return successors, (34), 17 states have call predecessors, (34), 8 states have call successors, (34) [2022-11-18 21:04:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 566 transitions. [2022-11-18 21:04:47,819 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 566 transitions. Word has length 64 [2022-11-18 21:04:47,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:47,819 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 566 transitions. [2022-11-18 21:04:47,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:04:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 566 transitions. [2022-11-18 21:04:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 21:04:47,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:47,820 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:47,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Ended with exit code 0 [2022-11-18 21:04:48,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:04:48,035 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:04:48,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:48,035 INFO L85 PathProgramCache]: Analyzing trace with hash 504851823, now seen corresponding path program 1 times [2022-11-18 21:04:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:04:48,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671028998] [2022-11-18 21:04:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:48,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:04:48,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:04:48,037 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:04:48,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-18 21:04:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:48,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 21:04:48,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:48,952 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 5 [2022-11-18 21:04:48,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:04:49,193 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 13 treesize of output 9 [2022-11-18 21:04:49,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 [2022-11-18 21:04:49,280 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_237 (_ BitVec 32)) (v_ArrVal_9670 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9670) v_arrayElimCell_237 (_ bv80 32)) |c_#length|))) is different from true [2022-11-18 21:04:49,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:49,687 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:04:49,687 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:04:49,716 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:04:49,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:04:49,887 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 11 treesize of output 7 [2022-11-18 21:04:49,894 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 11 treesize of output 7 [2022-11-18 21:04:50,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 21 [2022-11-18 21:04:50,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:04:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-18 21:04:50,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:50,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 32 [2022-11-18 21:04:50,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:50,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:50,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:50,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:57,942 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:04:57,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:04:57,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671028998] [2022-11-18 21:04:57,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671028998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:57,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [133266761] [2022-11-18 21:04:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:57,943 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:04:57,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:04:57,944 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:04:57,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (82)] Waiting until timeout for monitored process [2022-11-18 21:04:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 21:04:59,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:59,951 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 5 [2022-11-18 21:04:59,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:05:00,236 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_9800 (_ BitVec 32))) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9800) |create_data_#t~malloc7.base| (_ bv80 32)))))) is different from true [2022-11-18 21:05:00,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:05:00,631 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-18 21:05:00,632 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-18 21:05:00,663 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:05:00,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:05:00,917 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 11 treesize of output 7 [2022-11-18 21:05:00,941 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 11 treesize of output 7 [2022-11-18 21:05:01,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 21 [2022-11-18 21:05:01,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:05:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:05:01,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:01,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [133266761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:01,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:05:01,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-11-18 21:05:01,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57734419] [2022-11-18 21:05:01,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:01,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:05:01,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:05:01,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:05:01,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2022-11-18 21:05:01,614 INFO L87 Difference]: Start difference. First operand 476 states and 566 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:05:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:02,412 INFO L93 Difference]: Finished difference Result 596 states and 714 transitions. [2022-11-18 21:05:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:02,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-11-18 21:05:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:02,419 INFO L225 Difference]: With dead ends: 596 [2022-11-18 21:05:02,419 INFO L226 Difference]: Without dead ends: 596 [2022-11-18 21:05:02,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=61, Invalid=287, Unknown=2, NotChecked=70, Total=420 [2022-11-18 21:05:02,420 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 134 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:02,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 574 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 522 Unchecked, 0.7s Time] [2022-11-18 21:05:02,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-11-18 21:05:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 530. [2022-11-18 21:05:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 478 states have (on average 1.2364016736401673) internal successors, (591), 505 states have internal predecessors, (591), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 21 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-18 21:05:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 639 transitions. [2022-11-18 21:05:02,434 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 639 transitions. Word has length 65 [2022-11-18 21:05:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:02,434 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 639 transitions. [2022-11-18 21:05:02,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:05:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 639 transitions. [2022-11-18 21:05:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 21:05:02,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:02,436 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:02,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Ended with exit code 0 [2022-11-18 21:05:02,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (82)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:02,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:05:02,856 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:05:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash -665539789, now seen corresponding path program 1 times [2022-11-18 21:05:02,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:05:02,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731957887] [2022-11-18 21:05:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:02,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:05:02,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:05:02,858 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:05:02,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-18 21:05:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:03,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 21:05:03,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:03,864 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 11 treesize of output 7 [2022-11-18 21:05:03,942 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-18 21:05:03,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 21:05:04,058 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-18 21:05:04,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 29 treesize of output 24 [2022-11-18 21:05:04,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2022-11-18 21:05:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:05:04,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:05:04,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 32 [2022-11-18 21:05:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:05:04,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:05:04,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731957887] [2022-11-18 21:05:04,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731957887] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:05:04,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:05:04,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-18 21:05:04,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481054303] [2022-11-18 21:05:04,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:05:04,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 21:05:04,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:05:04,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 21:05:04,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:05:04,631 INFO L87 Difference]: Start difference. First operand 530 states and 639 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:05:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:06,898 INFO L93 Difference]: Finished difference Result 602 states and 744 transitions. [2022-11-18 21:05:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:05:06,899 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-11-18 21:05:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:06,902 INFO L225 Difference]: With dead ends: 602 [2022-11-18 21:05:06,903 INFO L226 Difference]: Without dead ends: 602 [2022-11-18 21:05:06,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:05:06,903 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 263 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:06,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 783 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 582 Invalid, 0 Unknown, 154 Unchecked, 2.0s Time] [2022-11-18 21:05:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-18 21:05:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 574. [2022-11-18 21:05:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 522 states have (on average 1.2471264367816093) internal successors, (651), 549 states have internal predecessors, (651), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 21 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-18 21:05:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 699 transitions. [2022-11-18 21:05:06,914 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 699 transitions. Word has length 65 [2022-11-18 21:05:06,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:06,914 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 699 transitions. [2022-11-18 21:05:06,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:05:06,915 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 699 transitions. [2022-11-18 21:05:06,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 21:05:06,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:06,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:06,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:07,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:05:07,127 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:05:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash -665539788, now seen corresponding path program 1 times [2022-11-18 21:05:07,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:05:07,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223789353] [2022-11-18 21:05:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:07,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:05:07,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:05:07,129 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:05:07,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-18 21:05:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:08,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 21:05:08,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:08,140 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:05:08,141 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 21:05:08,255 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 11 treesize of output 7 [2022-11-18 21:05:08,269 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 11 treesize of output 7 [2022-11-18 21:05:08,476 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-18 21:05:08,476 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 17 [2022-11-18 21:05:08,487 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 16 treesize of output 18 [2022-11-18 21:05:08,657 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-18 21:05:08,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2022-11-18 21:05:08,709 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-18 21:05:08,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 26 [2022-11-18 21:05:08,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2022-11-18 21:05:08,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 [2022-11-18 21:05:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:05:08,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:05:10,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 28 [2022-11-18 21:05:10,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 66 treesize of output 62 [2022-11-18 21:05:10,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 102 treesize of output 94 [2022-11-18 21:05:42,317 WARN L233 SmtUtils]: Spent 27.12s on a formula simplification. DAG size of input: 63 DAG size of output: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:05:42,490 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-11-18 21:05:42,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 63 [2022-11-18 21:05:44,851 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 56 treesize of output 54 [2022-11-18 21:05:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:05:45,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:05:45,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223789353] [2022-11-18 21:05:45,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223789353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:05:45,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:05:45,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2022-11-18 21:05:45,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329428848] [2022-11-18 21:05:45,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:05:45,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 21:05:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:05:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 21:05:45,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=227, Unknown=2, NotChecked=0, Total=272 [2022-11-18 21:05:45,099 INFO L87 Difference]: Start difference. First operand 574 states and 699 transitions. Second operand has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:05:48,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:48,315 INFO L93 Difference]: Finished difference Result 601 states and 722 transitions. [2022-11-18 21:05:48,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:05:48,317 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2022-11-18 21:05:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:48,319 INFO L225 Difference]: With dead ends: 601 [2022-11-18 21:05:48,319 INFO L226 Difference]: Without dead ends: 601 [2022-11-18 21:05:48,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=102, Invalid=402, Unknown=2, NotChecked=0, Total=506 [2022-11-18 21:05:48,320 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 264 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:48,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 931 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 502 Invalid, 0 Unknown, 285 Unchecked, 2.5s Time] [2022-11-18 21:05:48,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-18 21:05:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 573. [2022-11-18 21:05:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 522 states have (on average 1.239463601532567) internal successors, (647), 548 states have internal predecessors, (647), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 21 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-18 21:05:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 695 transitions. [2022-11-18 21:05:48,330 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 695 transitions. Word has length 65 [2022-11-18 21:05:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:48,330 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 695 transitions. [2022-11-18 21:05:48,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:05:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 695 transitions. [2022-11-18 21:05:48,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 21:05:48,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:48,332 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:48,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Ended with exit code 0 [2022-11-18 21:05:48,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:05:48,552 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:05:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364406, now seen corresponding path program 1 times [2022-11-18 21:05:48,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:05:48,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452694562] [2022-11-18 21:05:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:48,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:05:48,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:05:48,554 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:05:48,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-18 21:05:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:49,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 21:05:49,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:49,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:05:50,143 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 11 treesize of output 7 [2022-11-18 21:05:50,300 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 21:05:50,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 26 [2022-11-18 21:05:50,328 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 11 treesize of output 7 [2022-11-18 21:05:50,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 21:05:50,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:05:50,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-11-18 21:05:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:05:50,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:50,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:05:50,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452694562] [2022-11-18 21:05:50,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452694562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:50,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:50,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 21:05:50,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775848635] [2022-11-18 21:05:50,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:50,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:05:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:05:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:05:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:05:50,655 INFO L87 Difference]: Start difference. First operand 573 states and 695 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:05:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:53,103 INFO L93 Difference]: Finished difference Result 662 states and 788 transitions. [2022-11-18 21:05:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:05:53,104 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-11-18 21:05:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:53,107 INFO L225 Difference]: With dead ends: 662 [2022-11-18 21:05:53,107 INFO L226 Difference]: Without dead ends: 662 [2022-11-18 21:05:53,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:05:53,107 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 210 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:53,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 902 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 719 Invalid, 0 Unknown, 102 Unchecked, 2.1s Time] [2022-11-18 21:05:53,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-11-18 21:05:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 576. [2022-11-18 21:05:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 525 states have (on average 1.24) internal successors, (651), 551 states have internal predecessors, (651), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 21 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-18 21:05:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 699 transitions. [2022-11-18 21:05:53,118 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 699 transitions. Word has length 65 [2022-11-18 21:05:53,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:53,119 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 699 transitions. [2022-11-18 21:05:53,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:05:53,119 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 699 transitions. [2022-11-18 21:05:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 21:05:53,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:53,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:53,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:53,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:05:53,335 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:05:53,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364405, now seen corresponding path program 1 times [2022-11-18 21:05:53,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:05:53,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305224532] [2022-11-18 21:05:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:53,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:05:53,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:05:53,337 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:05:53,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-18 21:05:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:54,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 21:05:54,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:54,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:05:54,416 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:05:54,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:05:54,513 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 5 [2022-11-18 21:05:54,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:05:54,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:05:54,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 21:05:54,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 21:05:55,139 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 21:05:55,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 38 [2022-11-18 21:05:55,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 21:05:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:05:55,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:55,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:05:55,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305224532] [2022-11-18 21:05:55,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305224532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:55,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:55,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 21:05:55,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705537385] [2022-11-18 21:05:55,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:55,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:05:55,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:05:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:05:55,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:05:55,201 INFO L87 Difference]: Start difference. First operand 576 states and 699 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:05:58,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:58,619 INFO L93 Difference]: Finished difference Result 762 states and 899 transitions. [2022-11-18 21:05:58,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:05:58,620 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-11-18 21:05:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:58,626 INFO L225 Difference]: With dead ends: 762 [2022-11-18 21:05:58,626 INFO L226 Difference]: Without dead ends: 762 [2022-11-18 21:05:58,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:05:58,627 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 376 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:58,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 876 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 793 Invalid, 0 Unknown, 129 Unchecked, 2.8s Time] [2022-11-18 21:05:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-11-18 21:05:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 564. [2022-11-18 21:05:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 514 states have (on average 1.2431906614785992) internal successors, (639), 538 states have internal predecessors, (639), 8 states have call successors, (8), 3 states have call predecessors, (8), 11 states have return successors, (35), 22 states have call predecessors, (35), 8 states have call successors, (35) [2022-11-18 21:05:58,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 682 transitions. [2022-11-18 21:05:58,646 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 682 transitions. Word has length 65 [2022-11-18 21:05:58,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:58,646 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 682 transitions. [2022-11-18 21:05:58,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:05:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 682 transitions. [2022-11-18 21:05:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 21:05:58,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:58,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:58,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:58,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:05:58,873 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:05:58,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284034, now seen corresponding path program 1 times [2022-11-18 21:05:58,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:05:58,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743785642] [2022-11-18 21:05:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:58,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:05:58,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:05:58,875 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:05:58,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-18 21:05:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:59,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:05:59,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:59,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 19 [2022-11-18 21:05:59,908 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:05:59,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-18 21:05:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:05:59,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:59,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:05:59,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743785642] [2022-11-18 21:05:59,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743785642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:59,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:59,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:59,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007603324] [2022-11-18 21:05:59,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:59,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:05:59,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:05:59,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:05:59,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:05:59,974 INFO L87 Difference]: Start difference. First operand 564 states and 682 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:06:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:01,367 INFO L93 Difference]: Finished difference Result 585 states and 703 transitions. [2022-11-18 21:06:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:06:01,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-11-18 21:06:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:01,371 INFO L225 Difference]: With dead ends: 585 [2022-11-18 21:06:01,371 INFO L226 Difference]: Without dead ends: 585 [2022-11-18 21:06:01,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:06:01,371 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 33 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:01,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 570 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 317 Invalid, 0 Unknown, 80 Unchecked, 1.2s Time] [2022-11-18 21:06:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-18 21:06:01,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 577. [2022-11-18 21:06:01,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 527 states have (on average 1.2409867172675522) internal successors, (654), 551 states have internal predecessors, (654), 8 states have call successors, (8), 3 states have call predecessors, (8), 11 states have return successors, (35), 22 states have call predecessors, (35), 8 states have call successors, (35) [2022-11-18 21:06:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 697 transitions. [2022-11-18 21:06:01,380 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 697 transitions. Word has length 66 [2022-11-18 21:06:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:01,381 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 697 transitions. [2022-11-18 21:06:01,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:06:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 697 transitions. [2022-11-18 21:06:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 21:06:01,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:01,382 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:01,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Ended with exit code 0 [2022-11-18 21:06:01,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:06:01,583 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:06:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284035, now seen corresponding path program 1 times [2022-11-18 21:06:01,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:06:01,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12675947] [2022-11-18 21:06:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:01,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:06:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:06:01,586 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:06:01,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-18 21:06:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:02,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 21:06:02,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:02,814 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 11 treesize of output 7 [2022-11-18 21:06:02,910 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 11 treesize of output 7 [2022-11-18 21:06:02,934 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-18 21:06:02,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 22 [2022-11-18 21:06:03,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:06:03,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 48 [2022-11-18 21:06:03,774 INFO L321 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2022-11-18 21:06:03,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 23 [2022-11-18 21:06:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 21:06:03,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:03,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:06:03,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12675947] [2022-11-18 21:06:03,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12675947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:03,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:03,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 21:06:03,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546727219] [2022-11-18 21:06:03,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:03,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:06:03,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:06:03,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:06:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:06:03,912 INFO L87 Difference]: Start difference. First operand 577 states and 697 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:06:08,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:08,005 INFO L93 Difference]: Finished difference Result 731 states and 894 transitions. [2022-11-18 21:06:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 21:06:08,006 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-11-18 21:06:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:08,010 INFO L225 Difference]: With dead ends: 731 [2022-11-18 21:06:08,011 INFO L226 Difference]: Without dead ends: 731 [2022-11-18 21:06:08,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:06:08,011 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 223 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:08,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1114 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 863 Invalid, 0 Unknown, 84 Unchecked, 3.1s Time] [2022-11-18 21:06:08,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-11-18 21:06:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 629. [2022-11-18 21:06:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 578 states have (on average 1.2491349480968859) internal successors, (722), 600 states have internal predecessors, (722), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 25 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-18 21:06:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 770 transitions. [2022-11-18 21:06:08,026 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 770 transitions. Word has length 66 [2022-11-18 21:06:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:08,027 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 770 transitions. [2022-11-18 21:06:08,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:06:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 770 transitions. [2022-11-18 21:06:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 21:06:08,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:08,028 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:08,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:08,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:06:08,247 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:06:08,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:08,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1667627081, now seen corresponding path program 2 times [2022-11-18 21:06:08,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:06:08,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89669167] [2022-11-18 21:06:08,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:06:08,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:06:08,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:06:08,249 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:06:08,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-18 21:06:09,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:06:09,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:06:09,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 21:06:09,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:09,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:06:09,868 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 5 [2022-11-18 21:06:10,005 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_10976 (_ BitVec 32)) (v_ArrVal_10975 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_10975) |c_create_data_#t~malloc7.base| v_ArrVal_10976) |c_#length|)) (exists ((v_ArrVal_10977 (_ BitVec 1))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_10977) |c_create_data_#t~malloc7.base|))))) is different from true [2022-11-18 21:06:10,028 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10976 (_ BitVec 32)) (v_ArrVal_10975 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_10977 (_ BitVec 1))) (and (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_10977) |create_data_#t~malloc7.base|) (_ bv0 1)) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_10975) |create_data_#t~malloc7.base| v_ArrVal_10976) |c_#length|))) is different from true [2022-11-18 21:06:10,520 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10976 (_ BitVec 32)) (v_ArrVal_10975 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_10977 (_ BitVec 1))) (and (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_10977) |create_data_#t~malloc7.base|) (_ bv0 1)) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_10975) |create_data_#t~malloc7.base| v_ArrVal_10976) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-18 21:06:10,762 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10976 (_ BitVec 32)) (v_ArrVal_10975 (_ BitVec 32)) (v_create_data_~data~0.base_205 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_10977 (_ BitVec 1))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_205)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_205 v_ArrVal_10977) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| v_create_data_~data~0.base_205 v_ArrVal_10975) |create_data_#t~malloc7.base| v_ArrVal_10976) create_data_~data~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-18 21:06:10,808 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10976 (_ BitVec 32)) (v_ArrVal_10975 (_ BitVec 32)) (v_create_data_~data~0.base_205 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_10977 (_ BitVec 1))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_205)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_205 v_ArrVal_10977) |create_data_#t~malloc7.base|)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_205 v_ArrVal_10975) |create_data_#t~malloc7.base| v_ArrVal_10976) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-18 21:06:11,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:11,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:11,342 INFO L321 Elim1Store]: treesize reduction 99, result has 31.3 percent of original size [2022-11-18 21:06:11,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 53 [2022-11-18 21:06:11,430 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2022-11-18 21:06:11,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2022-11-18 21:06:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 13 not checked. [2022-11-18 21:06:11,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:12,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:06:12,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89669167] [2022-11-18 21:06:12,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89669167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:12,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [431423062] [2022-11-18 21:06:12,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:06:12,734 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:06:12,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:06:12,736 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:06:12,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (90)] Waiting until timeout for monitored process [2022-11-18 21:06:14,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 21:06:14,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245574957] [2022-11-18 21:06:14,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:06:14,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:14,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:14,389 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:14,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-11-18 21:06:14,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (90)] Forceful destruction successful, exit code 1 [2022-11-18 21:06:17,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:06:17,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:06:17,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 21:06:17,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:17,077 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 5 [2022-11-18 21:06:17,212 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11523 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_11521 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_11521) |create_data_#t~malloc7.base| v_ArrVal_11523) |c_#length|))) is different from true [2022-11-18 21:06:17,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:06:18,170 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 21:06:18,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 21:06:18,210 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11523 (_ BitVec 32)) (v_create_data_~data~0.base_215 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_11521 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_215)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_215 v_ArrVal_11521) |create_data_#t~malloc7.base| v_ArrVal_11523) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select (store |c_old(#valid)| v_create_data_~data~0.base_215 (_ bv1 1)) |create_data_#t~malloc7.base|) (_ bv0 1)) (not (= create_data_~nextData~0.base create_data_~data~0.base)))) is different from true [2022-11-18 21:06:18,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:18,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:18,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:18,897 INFO L321 Elim1Store]: treesize reduction 69, result has 34.9 percent of original size [2022-11-18 21:06:18,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 50 [2022-11-18 21:06:18,984 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-18 21:06:18,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:06:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 13 not checked. [2022-11-18 21:06:19,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:19,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 21:06:28,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245574957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:28,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:06:28,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-18 21:06:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623208330] [2022-11-18 21:06:28,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:06:28,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:06:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:06:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:06:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=106, Unknown=9, NotChecked=182, Total=342 [2022-11-18 21:06:28,644 INFO L87 Difference]: Start difference. First operand 629 states and 770 transitions. Second operand has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:06:28,701 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_11523 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_11521 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_11521) |create_data_#t~malloc7.base| v_ArrVal_11523) |c_#length|))) (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_10976 (_ BitVec 32)) (v_ArrVal_10975 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_10975) |c_create_data_#t~malloc7.base| v_ArrVal_10976) |c_#length|)) (exists ((v_ArrVal_10977 (_ BitVec 1))) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_10977) |c_create_data_#t~malloc7.base|)))))) is different from true [2022-11-18 21:06:28,710 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10976 (_ BitVec 32)) (v_ArrVal_10975 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_10977 (_ BitVec 1))) (and (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_10977) |create_data_#t~malloc7.base|) (_ bv0 1)) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_10975) |create_data_#t~malloc7.base| v_ArrVal_10976) |c_#length|))) (exists ((v_ArrVal_11523 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_11521 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_11521) |create_data_#t~malloc7.base| v_ArrVal_11523) |c_#length|)))) is different from true [2022-11-18 21:06:28,960 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10976 (_ BitVec 32)) (v_ArrVal_10975 (_ BitVec 32)) (v_create_data_~data~0.base_205 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_10977 (_ BitVec 1))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_205)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_205 v_ArrVal_10977) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| v_create_data_~data~0.base_205 v_ArrVal_10975) |create_data_#t~malloc7.base| v_ArrVal_10976) create_data_~data~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_11523 (_ BitVec 32)) (v_create_data_~data~0.base_215 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_11521 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_215)) (= (_ bv0 1) (bvadd (select |c_#valid| create_data_~data~0.base) (_ bv1 1))) (= |c_#length| (store (store (store |c_old(#length)| v_create_data_~data~0.base_215 v_ArrVal_11521) |create_data_#t~malloc7.base| v_ArrVal_11523) create_data_~data~0.base (_ bv16 32))) (= (select (store |c_old(#valid)| v_create_data_~data~0.base_215 (_ bv1 1)) |create_data_#t~malloc7.base|) (_ bv0 1))))) is different from true [2022-11-18 21:06:28,971 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10976 (_ BitVec 32)) (v_ArrVal_10975 (_ BitVec 32)) (v_create_data_~data~0.base_205 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_10977 (_ BitVec 1))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_205)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_205 v_ArrVal_10977) |create_data_#t~malloc7.base|)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_205 v_ArrVal_10975) |create_data_#t~malloc7.base| v_ArrVal_10976) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_11523 (_ BitVec 32)) (v_create_data_~data~0.base_215 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_11521 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| v_create_data_~data~0.base_215)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_215 v_ArrVal_11521) |create_data_#t~malloc7.base| v_ArrVal_11523) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select (store |c_old(#valid)| v_create_data_~data~0.base_215 (_ bv1 1)) |create_data_#t~malloc7.base|) (_ bv0 1)) (not (= create_data_~nextData~0.base create_data_~data~0.base))))) is different from true [2022-11-18 21:06:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:29,484 INFO L93 Difference]: Finished difference Result 897 states and 1075 transitions. [2022-11-18 21:06:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:06:29,485 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-11-18 21:06:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:29,488 INFO L225 Difference]: With dead ends: 897 [2022-11-18 21:06:29,488 INFO L226 Difference]: Without dead ends: 897 [2022-11-18 21:06:29,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=53, Invalid=110, Unknown=13, NotChecked=330, Total=506 [2022-11-18 21:06:29,488 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 258 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2232 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:29,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 678 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 2232 Unchecked, 0.6s Time] [2022-11-18 21:06:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-18 21:06:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 665. [2022-11-18 21:06:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 613 states have (on average 1.2398042414355628) internal successors, (760), 636 states have internal predecessors, (760), 8 states have call successors, (8), 3 states have call predecessors, (8), 13 states have return successors, (46), 25 states have call predecessors, (46), 8 states have call successors, (46) [2022-11-18 21:06:29,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 814 transitions. [2022-11-18 21:06:29,501 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 814 transitions. Word has length 66 [2022-11-18 21:06:29,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:29,501 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 814 transitions. [2022-11-18 21:06:29,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:06:29,502 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 814 transitions. [2022-11-18 21:06:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 21:06:29,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:29,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:29,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:29,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:29,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:06:29,919 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:06:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash -747494557, now seen corresponding path program 1 times [2022-11-18 21:06:29,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:06:29,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666543295] [2022-11-18 21:06:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:29,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:06:29,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:06:29,921 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:06:29,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-18 21:06:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:31,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 21:06:31,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:31,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:06:32,043 INFO L321 Elim1Store]: treesize reduction 123, result has 21.7 percent of original size [2022-11-18 21:06:32,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 56 [2022-11-18 21:06:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 21:06:32,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:36,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:06:36,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666543295] [2022-11-18 21:06:36,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666543295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:36,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [399998016] [2022-11-18 21:06:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:36,301 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:06:36,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:06:36,302 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:06:36,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (93)] Waiting until timeout for monitored process [2022-11-18 21:06:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:38,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 21:06:38,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:38,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:06:38,285 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_data_#t~malloc7.base| (_ BitVec 32))) (and (exists ((v_ArrVal_11946 (_ BitVec 1)) (v_ArrVal_11945 (_ BitVec 1))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_11946) |create_data_#t~malloc7.base| v_ArrVal_11945) |c_#valid|)) (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) is different from true [2022-11-18 21:06:38,616 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11946 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32)) (v_ArrVal_11945 (_ BitVec 1))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_11946) |create_data_#t~malloc7.base| v_ArrVal_11945) c_create_data_~nextData~0.base (_ bv1 1)) |c_#valid|))) is different from true [2022-11-18 21:06:38,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:06:39,097 INFO L321 Elim1Store]: treesize reduction 91, result has 27.2 percent of original size [2022-11-18 21:06:39,097 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 5 case distinctions, treesize of input 29 treesize of output 53 [2022-11-18 21:06:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 1 not checked. [2022-11-18 21:06:39,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 21:06:42,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [399998016] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:42,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:06:42,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 8] total 15 [2022-11-18 21:06:42,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980075080] [2022-11-18 21:06:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:42,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:06:42,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:06:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:06:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=146, Unknown=6, NotChecked=54, Total=272 [2022-11-18 21:06:42,696 INFO L87 Difference]: Start difference. First operand 665 states and 814 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:06:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:42,916 INFO L93 Difference]: Finished difference Result 675 states and 821 transitions. [2022-11-18 21:06:42,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:06:42,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2022-11-18 21:06:42,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:42,919 INFO L225 Difference]: With dead ends: 675 [2022-11-18 21:06:42,919 INFO L226 Difference]: Without dead ends: 675 [2022-11-18 21:06:42,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=66, Invalid=146, Unknown=6, NotChecked=54, Total=272 [2022-11-18 21:06:42,920 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 65 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:42,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 410 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 225 Unchecked, 0.2s Time] [2022-11-18 21:06:42,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-11-18 21:06:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 647. [2022-11-18 21:06:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 597 states have (on average 1.2345058626465661) internal successors, (737), 621 states have internal predecessors, (737), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 22 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-18 21:06:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 785 transitions. [2022-11-18 21:06:42,932 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 785 transitions. Word has length 67 [2022-11-18 21:06:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:42,933 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 785 transitions. [2022-11-18 21:06:42,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 21:06:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 785 transitions. [2022-11-18 21:06:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 21:06:42,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:42,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:42,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:43,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (93)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:43,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 21:06:43,367 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:06:43,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash -747494556, now seen corresponding path program 1 times [2022-11-18 21:06:43,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:06:43,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200652422] [2022-11-18 21:06:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:43,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:06:43,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:06:43,369 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:06:43,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-18 21:06:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:44,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:06:44,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:44,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:06:44,602 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 5 [2022-11-18 21:06:45,377 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12161 (_ BitVec 32)) (v_ArrVal_12162 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12162) |create_data_#t~malloc7.base| v_ArrVal_12161) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) is different from true [2022-11-18 21:06:45,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:45,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:45,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:45,749 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-18 21:06:45,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-18 21:06:45,808 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-18 21:06:45,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:06:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 1 not checked. [2022-11-18 21:06:45,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:48,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:06:48,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200652422] [2022-11-18 21:06:48,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200652422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:48,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [299582391] [2022-11-18 21:06:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:48,349 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 21:06:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 21:06:48,350 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 21:06:48,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (95)] Waiting until timeout for monitored process [2022-11-18 21:06:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:50,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 21:06:50,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:50,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:06:50,586 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 5 [2022-11-18 21:06:50,781 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12374 (_ BitVec 32)) (v_ArrVal_12373 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12373) |create_data_#t~malloc7.base| v_ArrVal_12374) |c_#length|))) is different from true [2022-11-18 21:06:51,523 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_12374 (_ BitVec 32)) (v_ArrVal_12373 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12373) |create_data_#t~malloc7.base| v_ArrVal_12374) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-18 21:06:51,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:51,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:51,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:51,912 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-18 21:06:51,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-18 21:06:51,976 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-18 21:06:51,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:06:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 1 not checked. [2022-11-18 21:06:52,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:56,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [299582391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:56,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:06:56,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 10 [2022-11-18 21:06:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606350711] [2022-11-18 21:06:56,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:06:56,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:06:56,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:06:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:06:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=86, Unknown=6, NotChecked=60, Total=182 [2022-11-18 21:06:56,458 INFO L87 Difference]: Start difference. First operand 647 states and 785 transitions. Second operand has 11 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:06:56,540 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12374 (_ BitVec 32)) (v_ArrVal_12373 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12373) |create_data_#t~malloc7.base| v_ArrVal_12374) |c_#length|))) (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (exists ((v_ArrVal_12161 (_ BitVec 32)) (v_ArrVal_12162 (_ BitVec 32))) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12162) |create_data_#t~malloc7.base| v_ArrVal_12161)))))) is different from true [2022-11-18 21:06:56,549 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_12161 (_ BitVec 32)) (v_ArrVal_12162 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12162) |create_data_#t~malloc7.base| v_ArrVal_12161) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) (exists ((v_ArrVal_12374 (_ BitVec 32)) (v_ArrVal_12373 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_12373) |create_data_#t~malloc7.base| v_ArrVal_12374) create_data_~nextData~0.base (_ bv16 32)) |c_#length|)))) is different from true [2022-11-18 21:06:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:57,022 INFO L93 Difference]: Finished difference Result 837 states and 1011 transitions. [2022-11-18 21:06:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:06:57,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2022-11-18 21:06:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:57,031 INFO L225 Difference]: With dead ends: 837 [2022-11-18 21:06:57,031 INFO L226 Difference]: Without dead ends: 837 [2022-11-18 21:06:57,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=46, Invalid=122, Unknown=8, NotChecked=130, Total=306 [2022-11-18 21:06:57,032 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 188 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 996 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:57,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 484 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 996 Unchecked, 0.5s Time] [2022-11-18 21:06:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-11-18 21:06:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 647. [2022-11-18 21:06:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 597 states have (on average 1.2345058626465661) internal successors, (737), 621 states have internal predecessors, (737), 8 states have call successors, (8), 3 states have call predecessors, (8), 12 states have return successors, (40), 22 states have call predecessors, (40), 8 states have call successors, (40) [2022-11-18 21:06:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 785 transitions. [2022-11-18 21:06:57,045 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 785 transitions. Word has length 67 [2022-11-18 21:06:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:57,046 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 785 transitions. [2022-11-18 21:06:57,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:06:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 785 transitions. [2022-11-18 21:06:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 21:06:57,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:57,047 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:57,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (95)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:57,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Ended with exit code 0 [2022-11-18 21:06:57,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:06:57,465 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-18 21:06:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:57,466 INFO L85 PathProgramCache]: Analyzing trace with hash 803066894, now seen corresponding path program 1 times [2022-11-18 21:06:57,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:06:57,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69265726] [2022-11-18 21:06:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:57,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 21:06:57,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:06:57,468 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 21:06:57,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed4de48-a161-47d7-ae4a-5d8441296c0a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-18 21:06:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:58,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-18 21:06:58,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:58,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 21:06:58,639 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 21:06:58,639 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 [2022-11-18 21:06:58,896 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 13 treesize of output 9 [2022-11-18 21:06:58,905 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 13 treesize of output 9 [2022-11-18 21:06:59,091 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:06:59,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-18 21:06:59,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:59,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:06:59,212 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:06:59,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-18 21:06:59,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:59,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 21:06:59,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2022-11-18 21:06:59,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:59,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 21:07:01,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:01,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:01,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:01,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:07:01,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-18 21:07:01,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-11-18 21:07:01,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 21:07:03,846 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-18 21:07:03,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 37 [2022-11-18 21:07:03,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:07:03,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 21:07:04,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 21:07:04,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 34 [2022-11-18 21:07:04,966 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 21:07:04,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 48 [2022-11-18 21:07:05,257 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 21:07:05,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 21 [2022-11-18 21:07:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:07:05,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:07:06,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:07:06,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 6534 treesize of output 6167