./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/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_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/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 64bit --witnessprinter.graph.data.programhash 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:50:05,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:50:05,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:50:05,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:50:05,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:50:05,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:50:05,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:50:05,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:50:05,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:50:05,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:50:05,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:50:05,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:50:05,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:50:05,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:50:05,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:50:05,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:50:05,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:50:05,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:50:05,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:50:05,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:50:05,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:50:05,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:50:05,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:50:05,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:50:05,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:50:05,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:50:05,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:50:05,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:50:05,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:50:05,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:50:05,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:50:05,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:50:05,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:50:05,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:50:05,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:50:05,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:50:05,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:50:05,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:50:05,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:50:05,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:50:05,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:50:05,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-18 19:50:05,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:50:05,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:50:05,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:50:05,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:50:05,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:50:05,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:50:05,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:50:05,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:50:05,361 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:50:05,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:50:05,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:50:05,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:50:05,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:50:05,363 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:50:05,363 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:50:05,364 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:50:05,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:50:05,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:50:05,364 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:50:05,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:50:05,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:50:05,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:50:05,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:05,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:50:05,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:50:05,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:50:05,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:50:05,368 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_86079a9a-da43-4bc2-b01d-18c660dd18fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2022-11-18 19:50:05,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:50:05,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:50:05,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:50:05,736 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:50:05,737 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:50:05,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2022-11-18 19:50:05,840 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data/8e81101a3/a358716efa914ba5a862371e1eb33d40/FLAG87c32b890 [2022-11-18 19:50:06,465 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:50:06,466 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2022-11-18 19:50:06,486 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data/8e81101a3/a358716efa914ba5a862371e1eb33d40/FLAG87c32b890 [2022-11-18 19:50:06,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data/8e81101a3/a358716efa914ba5a862371e1eb33d40 [2022-11-18 19:50:06,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:50:06,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:50:06,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:06,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:50:06,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:50:06,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:06" (1/1) ... [2022-11-18 19:50:06,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab387e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:06, skipping insertion in model container [2022-11-18 19:50:06,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:06" (1/1) ... [2022-11-18 19:50:06,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:50:06,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:50:07,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:07,497 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-18 19:50:07,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a6943b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:07, skipping insertion in model container [2022-11-18 19:50:07,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:07,499 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 19:50:07,508 INFO L158 Benchmark]: Toolchain (without parser) took 791.49ms. Allocated memory is still 130.0MB. Free memory was 93.9MB in the beginning and 98.3MB in the end (delta: -4.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 19:50:07,508 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 86.0MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:50:07,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 787.85ms. Allocated memory is still 130.0MB. Free memory was 93.7MB in the beginning and 98.3MB in the end (delta: -4.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 19:50:07,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 86.0MB. Free memory was 59.6MB in the beginning and 59.6MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 787.85ms. Allocated memory is still 130.0MB. Free memory was 93.7MB in the beginning and 98.3MB in the end (delta: -4.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1162]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/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_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/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 64bit --witnessprinter.graph.data.programhash 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:50:09,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:50:09,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:50:09,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:50:09,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:50:09,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:50:09,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:50:09,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:50:09,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:50:09,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:50:09,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:50:09,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:50:09,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:50:09,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:50:09,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:50:09,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:50:09,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:50:09,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:50:09,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:50:09,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:50:09,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:50:09,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:50:09,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:50:09,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:50:09,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:50:09,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:50:09,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:50:09,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:50:09,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:50:09,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:50:09,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:50:09,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:50:09,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:50:09,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:50:09,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:50:09,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:50:09,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:50:09,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:50:09,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:50:09,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:50:09,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:50:09,857 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2022-11-18 19:50:09,898 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:50:09,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:50:09,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:50:09,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:50:09,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:50:09,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:50:09,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:50:09,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:50:09,903 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:50:09,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:50:09,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:50:09,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:50:09,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:50:09,906 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:50:09,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:50:09,906 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:50:09,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:50:09,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:50:09,907 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:50:09,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:50:09,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:50:09,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:50:09,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:50:09,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:50:09,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:09,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:50:09,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:50:09,910 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:50:09,911 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:50:09,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:50:09,911 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_86079a9a-da43-4bc2-b01d-18c660dd18fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2022-11-18 19:50:10,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:50:10,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:50:10,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:50:10,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:50:10,417 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:50:10,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2022-11-18 19:50:10,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data/17c4388a7/564c56c1556c429caf607753a0243afb/FLAGc7d0c8f2f [2022-11-18 19:50:11,126 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:50:11,127 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2022-11-18 19:50:11,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data/17c4388a7/564c56c1556c429caf607753a0243afb/FLAGc7d0c8f2f [2022-11-18 19:50:11,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/data/17c4388a7/564c56c1556c429caf607753a0243afb [2022-11-18 19:50:11,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:50:11,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:50:11,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:11,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:50:11,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:50:11,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:11" (1/1) ... [2022-11-18 19:50:11,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e594fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:11, skipping insertion in model container [2022-11-18 19:50:11,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:50:11" (1/1) ... [2022-11-18 19:50:11,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:50:11,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:50:12,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:12,454 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 19:50:12,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:50:12,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:12,614 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:50:12,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:50:12,815 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:50:12,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12 WrapperNode [2022-11-18 19:50:12,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:50:12,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:12,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:50:12,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:50:12,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:12,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:12,928 INFO L138 Inliner]: procedures = 350, calls = 111, calls flagged for inlining = 8, calls inlined = 7, statements flattened = 257 [2022-11-18 19:50:12,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:50:12,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:50:12,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:50:12,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:50:12,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:12,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:12,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:12,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:12,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:13,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:13,004 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:13,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:13,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:50:13,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:50:13,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:50:13,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:50:13,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (1/1) ... [2022-11-18 19:50:13,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:50:13,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:13,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:50:13,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:50:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-18 19:50:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 19:50:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 19:50:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:50:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-18 19:50:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:50:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 19:50:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-18 19:50:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:50:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2022-11-18 19:50:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:50:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:50:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:50:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:50:13,323 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:50:13,325 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:50:14,502 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:50:14,513 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:50:14,515 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-18 19:50:14,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:50:14 BoogieIcfgContainer [2022-11-18 19:50:14,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:50:14,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:50:14,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:50:14,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:50:14,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:50:11" (1/3) ... [2022-11-18 19:50:14,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17740d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:50:14, skipping insertion in model container [2022-11-18 19:50:14,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:50:12" (2/3) ... [2022-11-18 19:50:14,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17740d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:50:14, skipping insertion in model container [2022-11-18 19:50:14,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:50:14" (3/3) ... [2022-11-18 19:50:14,528 INFO L112 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2022-11-18 19:50:14,548 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:50:14,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 73 error locations. [2022-11-18 19:50:14,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:50:14,610 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;@152d0587, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:50:14,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2022-11-18 19:50:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 102 states have (on average 1.9509803921568627) internal successors, (199), 175 states have internal predecessors, (199), 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 19:50:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:50:14,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:14,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:50:14,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:14,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:14,624 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-18 19:50:14,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:14,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134595747] [2022-11-18 19:50:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:14,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:14,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:14,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:14,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 19:50:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:14,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:50:14,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:14,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:50:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:14,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:14,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:14,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134595747] [2022-11-18 19:50:14,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134595747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:14,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:14,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:50:14,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538259463] [2022-11-18 19:50:14,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:14,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:50:14,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:14,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:50:14,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:14,936 INFO L87 Difference]: Start difference. First operand has 178 states, 102 states have (on average 1.9509803921568627) internal successors, (199), 175 states have internal predecessors, (199), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:15,471 INFO L93 Difference]: Finished difference Result 188 states and 204 transitions. [2022-11-18 19:50:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:50:15,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 19:50:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:15,485 INFO L225 Difference]: With dead ends: 188 [2022-11-18 19:50:15,485 INFO L226 Difference]: Without dead ends: 186 [2022-11-18 19:50:15,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:15,492 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 160 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:15,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 144 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:50:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-18 19:50:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 170. [2022-11-18 19:50:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 99 states have (on average 1.8484848484848484) internal successors, (183), 167 states have internal predecessors, (183), 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 19:50:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 185 transitions. [2022-11-18 19:50:15,569 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 185 transitions. Word has length 3 [2022-11-18 19:50:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:15,569 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 185 transitions. [2022-11-18 19:50:15,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 185 transitions. [2022-11-18 19:50:15,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:50:15,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:15,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:50:15,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:15,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:15,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:15,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:15,787 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-18 19:50:15,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:15,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097306643] [2022-11-18 19:50:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:15,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:15,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:15,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:15,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 19:50:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:15,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:50:15,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:15,910 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 19:50:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:15,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:15,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:15,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097306643] [2022-11-18 19:50:15,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097306643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:15,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:15,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:50:15,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166202146] [2022-11-18 19:50:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:15,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:50:15,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:50:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:15,945 INFO L87 Difference]: Start difference. First operand 170 states and 185 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:16,629 INFO L93 Difference]: Finished difference Result 169 states and 184 transitions. [2022-11-18 19:50:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:50:16,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 19:50:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:16,631 INFO L225 Difference]: With dead ends: 169 [2022-11-18 19:50:16,631 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 19:50:16,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:16,632 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 9 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:16,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 288 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:50:16,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 19:50:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-18 19:50:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 99 states have (on average 1.8383838383838385) internal successors, (182), 166 states have internal predecessors, (182), 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 19:50:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 184 transitions. [2022-11-18 19:50:16,650 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 184 transitions. Word has length 3 [2022-11-18 19:50:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:16,652 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 184 transitions. [2022-11-18 19:50:16,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 184 transitions. [2022-11-18 19:50:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:50:16,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:16,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:50:16,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:16,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:16,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2022-11-18 19:50:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:16,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622703928] [2022-11-18 19:50:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:16,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:16,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:16,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:16,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 19:50:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:16,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:50:16,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:16,997 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 19:50:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:17,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:17,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:17,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622703928] [2022-11-18 19:50:17,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622703928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:17,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:17,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:17,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194300616] [2022-11-18 19:50:17,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:17,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:17,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:17,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:17,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:17,066 INFO L87 Difference]: Start difference. First operand 169 states and 184 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:17,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:17,958 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2022-11-18 19:50:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:50:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:17,960 INFO L225 Difference]: With dead ends: 173 [2022-11-18 19:50:17,960 INFO L226 Difference]: Without dead ends: 173 [2022-11-18 19:50:17,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:17,961 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 12 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:17,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 396 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:50:17,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-18 19:50:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2022-11-18 19:50:17,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 101 states have (on average 1.8217821782178218) internal successors, (184), 168 states have internal predecessors, (184), 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 19:50:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 186 transitions. [2022-11-18 19:50:17,970 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 186 transitions. Word has length 6 [2022-11-18 19:50:17,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:17,971 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 186 transitions. [2022-11-18 19:50:17,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 186 transitions. [2022-11-18 19:50:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:50:17,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:17,972 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:17,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:18,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:18,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:18,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1261842348, now seen corresponding path program 1 times [2022-11-18 19:50:18,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:18,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523082067] [2022-11-18 19:50:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:18,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:18,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:18,186 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:18,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 19:50:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:18,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:50:18,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:18,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:50:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:18,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:19,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:19,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523082067] [2022-11-18 19:50:19,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523082067] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:19,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:50:19,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:50:19,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331337501] [2022-11-18 19:50:19,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:19,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:50:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:50:19,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:50:19,253 INFO L87 Difference]: Start difference. First operand 171 states and 186 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:23,117 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2022-11-18 19:50:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:50:23,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 19:50:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:23,119 INFO L225 Difference]: With dead ends: 177 [2022-11-18 19:50:23,120 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 19:50:23,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:50:23,123 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 22 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:23,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 724 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-18 19:50:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 19:50:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-18 19:50:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 108 states have (on average 1.7592592592592593) internal successors, (190), 174 states have internal predecessors, (190), 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 19:50:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 192 transitions. [2022-11-18 19:50:23,145 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 192 transitions. Word has length 10 [2022-11-18 19:50:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:23,145 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 192 transitions. [2022-11-18 19:50:23,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 192 transitions. [2022-11-18 19:50:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:50:23,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:23,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:23,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:23,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:23,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1324461056, now seen corresponding path program 1 times [2022-11-18 19:50:23,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:23,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113984876] [2022-11-18 19:50:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:23,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:23,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:23,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:23,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 19:50:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:23,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:50:23,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:23,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:23,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:23,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113984876] [2022-11-18 19:50:23,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113984876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:23,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:50:23,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-18 19:50:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000931851] [2022-11-18 19:50:23,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:23,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:50:23,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:23,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:50:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:50:23,715 INFO L87 Difference]: Start difference. First operand 177 states and 192 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:50:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:24,097 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2022-11-18 19:50:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:50:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-18 19:50:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:24,099 INFO L225 Difference]: With dead ends: 197 [2022-11-18 19:50:24,099 INFO L226 Difference]: Without dead ends: 197 [2022-11-18 19:50:24,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:50:24,100 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 27 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:24,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 902 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:50:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-18 19:50:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-18 19:50:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 128 states have (on average 1.640625) internal successors, (210), 194 states have internal predecessors, (210), 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 19:50:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2022-11-18 19:50:24,110 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 25 [2022-11-18 19:50:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:24,111 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2022-11-18 19:50:24,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:50:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2022-11-18 19:50:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:50:24,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:24,112 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:24,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -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 19:50:24,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:24,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash -536579439, now seen corresponding path program 2 times [2022-11-18 19:50:24,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:24,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634987662] [2022-11-18 19:50:24,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:50:24,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:24,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:24,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:24,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 19:50:24,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:50:24,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:24,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:50:24,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:24,520 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:50:24,520 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 19:50:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-18 19:50:24,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:24,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:24,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634987662] [2022-11-18 19:50:24,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634987662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:24,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:24,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:50:24,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397730923] [2022-11-18 19:50:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:24,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:50:24,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:24,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:50:24,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:24,566 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 19:50:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:25,020 INFO L93 Difference]: Finished difference Result 208 states and 224 transitions. [2022-11-18 19:50:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:50:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 45 [2022-11-18 19:50:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:25,022 INFO L225 Difference]: With dead ends: 208 [2022-11-18 19:50:25,022 INFO L226 Difference]: Without dead ends: 208 [2022-11-18 19:50:25,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:50:25,023 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 145 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:25,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 147 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:50:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-18 19:50:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 192. [2022-11-18 19:50:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 128 states have (on average 1.6015625) internal successors, (205), 189 states have internal predecessors, (205), 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 19:50:25,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 207 transitions. [2022-11-18 19:50:25,031 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 207 transitions. Word has length 45 [2022-11-18 19:50:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:25,031 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 207 transitions. [2022-11-18 19:50:25,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 19:50:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 207 transitions. [2022-11-18 19:50:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:50:25,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:25,033 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:25,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -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 19:50:25,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:25,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash -536579438, now seen corresponding path program 1 times [2022-11-18 19:50:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:25,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232634683] [2022-11-18 19:50:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:25,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:25,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:25,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:25,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 19:50:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:25,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:50:25,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:25,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:50:26,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:26,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232634683] [2022-11-18 19:50:26,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232634683] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:26,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:50:26,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-18 19:50:26,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751518880] [2022-11-18 19:50:26,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:26,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:50:26,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:50:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:50:26,004 INFO L87 Difference]: Start difference. First operand 192 states and 207 transitions. Second operand has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:50:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:26,824 INFO L93 Difference]: Finished difference Result 200 states and 215 transitions. [2022-11-18 19:50:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:50:26,826 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-11-18 19:50:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:26,828 INFO L225 Difference]: With dead ends: 200 [2022-11-18 19:50:26,828 INFO L226 Difference]: Without dead ends: 200 [2022-11-18 19:50:26,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:50:26,829 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 30 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:26,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2657 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:50:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-18 19:50:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-18 19:50:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 197 states have internal predecessors, (213), 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 19:50:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 215 transitions. [2022-11-18 19:50:26,847 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 215 transitions. Word has length 45 [2022-11-18 19:50:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:26,850 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 215 transitions. [2022-11-18 19:50:26,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:50:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 215 transitions. [2022-11-18 19:50:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:50:26,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:26,855 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:26,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:27,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:27,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1584587084, now seen corresponding path program 2 times [2022-11-18 19:50:27,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:27,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340047268] [2022-11-18 19:50:27,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:50:27,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:27,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:27,073 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:27,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 19:50:27,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:50:27,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:27,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:50:27,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:27,326 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-18 19:50:27,326 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 19 treesize of output 21 [2022-11-18 19:50:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:27,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:27,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:27,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340047268] [2022-11-18 19:50:27,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340047268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:27,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:27,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:50:27,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397413014] [2022-11-18 19:50:27,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:27,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:50:27,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:27,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:50:27,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:50:27,418 INFO L87 Difference]: Start difference. First operand 200 states and 215 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 19:50:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:28,765 INFO L93 Difference]: Finished difference Result 319 states and 347 transitions. [2022-11-18 19:50:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:50:28,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 19:50:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:28,768 INFO L225 Difference]: With dead ends: 319 [2022-11-18 19:50:28,768 INFO L226 Difference]: Without dead ends: 319 [2022-11-18 19:50:28,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:28,769 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 431 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:28,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 475 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:50:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-18 19:50:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 263. [2022-11-18 19:50:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 200 states have (on average 1.67) internal successors, (334), 260 states have internal predecessors, (334), 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 19:50:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 336 transitions. [2022-11-18 19:50:28,778 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 336 transitions. Word has length 53 [2022-11-18 19:50:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:28,778 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 336 transitions. [2022-11-18 19:50:28,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 19:50:28,779 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 336 transitions. [2022-11-18 19:50:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 19:50:28,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:28,780 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:28,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 19:50:28,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:28,992 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash 448239575, now seen corresponding path program 1 times [2022-11-18 19:50:28,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:28,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662156968] [2022-11-18 19:50:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:28,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:28,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:28,996 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:29,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 19:50:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:29,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:50:29,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:29,534 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-18 19:50:29,534 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 19 treesize of output 21 [2022-11-18 19:50:29,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:50:29,859 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 19:50:29,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2022-11-18 19:50:29,889 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:50:29,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:50:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:29,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:29,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:29,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662156968] [2022-11-18 19:50:29,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662156968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:29,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:29,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:50:29,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110547248] [2022-11-18 19:50:29,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:29,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:50:29,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:29,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:50:29,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:50:29,988 INFO L87 Difference]: Start difference. First operand 263 states and 336 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 19:50:30,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:30,106 INFO L93 Difference]: Finished difference Result 264 states and 337 transitions. [2022-11-18 19:50:30,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:50:30,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 19:50:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:30,109 INFO L225 Difference]: With dead ends: 264 [2022-11-18 19:50:30,109 INFO L226 Difference]: Without dead ends: 264 [2022-11-18 19:50:30,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:50:30,110 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 4 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:30,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 926 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 263 Unchecked, 0.0s Time] [2022-11-18 19:50:30,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-18 19:50:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-11-18 19:50:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 201 states have (on average 1.6666666666666667) internal successors, (335), 261 states have internal predecessors, (335), 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 19:50:30,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 337 transitions. [2022-11-18 19:50:30,118 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 337 transitions. Word has length 56 [2022-11-18 19:50:30,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:30,118 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 337 transitions. [2022-11-18 19:50:30,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 19:50:30,118 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 337 transitions. [2022-11-18 19:50:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 19:50:30,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:30,123 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:30,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:30,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:30,336 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:30,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:30,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1010524338, now seen corresponding path program 1 times [2022-11-18 19:50:30,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:30,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481862722] [2022-11-18 19:50:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:30,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:30,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:30,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:30,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 19:50:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:30,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:50:30,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:30,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:30,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:30,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481862722] [2022-11-18 19:50:30,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481862722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:30,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:30,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:30,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60629156] [2022-11-18 19:50:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:30,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:30,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:30,663 INFO L87 Difference]: Start difference. First operand 264 states and 337 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19:50:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:31,291 INFO L93 Difference]: Finished difference Result 282 states and 359 transitions. [2022-11-18 19:50:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:31,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19:50:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:31,294 INFO L225 Difference]: With dead ends: 282 [2022-11-18 19:50:31,294 INFO L226 Difference]: Without dead ends: 282 [2022-11-18 19:50:31,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:31,294 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 243 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:31,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 184 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:50:31,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-18 19:50:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 258. [2022-11-18 19:50:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 201 states have (on average 1.6069651741293531) internal successors, (323), 255 states have internal predecessors, (323), 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 19:50:31,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 325 transitions. [2022-11-18 19:50:31,302 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 325 transitions. Word has length 57 [2022-11-18 19:50:31,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:31,303 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 325 transitions. [2022-11-18 19:50:31,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19:50:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 325 transitions. [2022-11-18 19:50:31,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 19:50:31,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:31,304 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:31,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:31,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:31,519 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1010524339, now seen corresponding path program 1 times [2022-11-18 19:50:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:31,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648334293] [2022-11-18 19:50:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:31,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:31,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:31,520 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:31,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 19:50:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:31,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:50:31,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:32,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:32,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:32,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648334293] [2022-11-18 19:50:32,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648334293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:32,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:32,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:50:32,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167425561] [2022-11-18 19:50:32,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:32,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:50:32,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:32,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:50:32,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:50:32,165 INFO L87 Difference]: Start difference. First operand 258 states and 325 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 19:50:33,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:33,231 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2022-11-18 19:50:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:50:33,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 19:50:33,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:33,233 INFO L225 Difference]: With dead ends: 194 [2022-11-18 19:50:33,233 INFO L226 Difference]: Without dead ends: 194 [2022-11-18 19:50:33,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:50:33,234 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 158 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:33,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 649 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:50:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-18 19:50:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-11-18 19:50:33,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 138 states have (on average 1.5) internal successors, (207), 191 states have internal predecessors, (207), 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 19:50:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 209 transitions. [2022-11-18 19:50:33,239 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 209 transitions. Word has length 57 [2022-11-18 19:50:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:33,239 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 209 transitions. [2022-11-18 19:50:33,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 19:50:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 209 transitions. [2022-11-18 19:50:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:50:33,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:33,240 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:33,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:33,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:33,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1261501400, now seen corresponding path program 1 times [2022-11-18 19:50:33,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:33,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980655811] [2022-11-18 19:50:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:33,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:33,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:33,463 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:33,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 19:50:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:33,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:50:33,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:33,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:33,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:33,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980655811] [2022-11-18 19:50:33,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980655811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:33,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:33,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:50:33,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965722380] [2022-11-18 19:50:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:33,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:50:33,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:33,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:50:33,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:33,842 INFO L87 Difference]: Start difference. First operand 194 states and 209 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 19:50:34,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:34,150 INFO L93 Difference]: Finished difference Result 213 states and 229 transitions. [2022-11-18 19:50:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:50:34,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 19:50:34,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:34,152 INFO L225 Difference]: With dead ends: 213 [2022-11-18 19:50:34,152 INFO L226 Difference]: Without dead ends: 213 [2022-11-18 19:50:34,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:50:34,153 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 193 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:34,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 316 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:50:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-18 19:50:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 206. [2022-11-18 19:50:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 150 states have (on average 1.5066666666666666) internal successors, (226), 203 states have internal predecessors, (226), 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 19:50:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 228 transitions. [2022-11-18 19:50:34,160 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 228 transitions. Word has length 58 [2022-11-18 19:50:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:34,160 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 228 transitions. [2022-11-18 19:50:34,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 19:50:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 228 transitions. [2022-11-18 19:50:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:50:34,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:34,162 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:34,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:34,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:34,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:34,381 INFO L85 PathProgramCache]: Analyzing trace with hash 451837722, now seen corresponding path program 1 times [2022-11-18 19:50:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:34,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570896454] [2022-11-18 19:50:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:34,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:34,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:34,383 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:34,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 19:50:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:34,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:50:34,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:35,059 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-18 19:50:35,059 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 14 treesize of output 20 [2022-11-18 19:50:35,107 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:50:35,108 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 19:50:35,306 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:50:35,307 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 17 treesize of output 23 [2022-11-18 19:50:35,352 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:50:35,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:50:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:35,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:35,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:35,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570896454] [2022-11-18 19:50:35,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570896454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:35,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:35,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:50:35,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780948743] [2022-11-18 19:50:35,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:35,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:50:35,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:35,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:50:35,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:50:35,570 INFO L87 Difference]: Start difference. First operand 206 states and 228 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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 19:50:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:35,681 INFO L93 Difference]: Finished difference Result 206 states and 227 transitions. [2022-11-18 19:50:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:50:35,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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 19:50:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:35,683 INFO L225 Difference]: With dead ends: 206 [2022-11-18 19:50:35,683 INFO L226 Difference]: Without dead ends: 206 [2022-11-18 19:50:35,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:50:35,684 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 4 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 312 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:35,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 978 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 312 Unchecked, 0.0s Time] [2022-11-18 19:50:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-18 19:50:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-11-18 19:50:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 150 states have (on average 1.5) internal successors, (225), 203 states have internal predecessors, (225), 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 19:50:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 227 transitions. [2022-11-18 19:50:35,691 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 227 transitions. Word has length 59 [2022-11-18 19:50:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:35,691 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 227 transitions. [2022-11-18 19:50:35,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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 19:50:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 227 transitions. [2022-11-18 19:50:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 19:50:35,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:35,693 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:35,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:35,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:35,911 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:35,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:35,912 INFO L85 PathProgramCache]: Analyzing trace with hash 451837721, now seen corresponding path program 1 times [2022-11-18 19:50:35,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:35,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203916209] [2022-11-18 19:50:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:35,912 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 19:50:35,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:35,913 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:35,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 19:50:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:36,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:50:36,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:36,370 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:50:36,370 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 19:50:36,400 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:50:36,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:50:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:36,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:36,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:36,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203916209] [2022-11-18 19:50:36,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203916209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:36,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:36,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:50:36,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190998743] [2022-11-18 19:50:36,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:36,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:36,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:36,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:36,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:36,459 INFO L87 Difference]: Start difference. First operand 206 states and 227 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 19:50:36,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:36,942 INFO L93 Difference]: Finished difference Result 213 states and 234 transitions. [2022-11-18 19:50:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:50:36,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 19:50:36,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:36,943 INFO L225 Difference]: With dead ends: 213 [2022-11-18 19:50:36,943 INFO L226 Difference]: Without dead ends: 213 [2022-11-18 19:50:36,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:50:36,944 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 132 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:36,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 230 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:50:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-18 19:50:36,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 210. [2022-11-18 19:50:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 155 states have (on average 1.4967741935483871) internal successors, (232), 207 states have internal predecessors, (232), 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 19:50:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2022-11-18 19:50:36,949 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 59 [2022-11-18 19:50:36,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:36,949 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2022-11-18 19:50:36,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 19:50:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2022-11-18 19:50:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 19:50:36,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:36,950 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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 19:50:36,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:37,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:37,163 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:37,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash 270059549, now seen corresponding path program 1 times [2022-11-18 19:50:37,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:37,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099604309] [2022-11-18 19:50:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:37,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:37,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:37,165 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:37,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 19:50:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:37,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:50:37,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:37,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:50:37,747 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 16 treesize of output 12 [2022-11-18 19:50:37,904 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-18 19:50:37,905 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 40 treesize of output 30 [2022-11-18 19:50:38,008 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 25 treesize of output 11 [2022-11-18 19:50:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:38,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:38,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:38,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099604309] [2022-11-18 19:50:38,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099604309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:38,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:38,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:50:38,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042959740] [2022-11-18 19:50:38,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:38,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:50:38,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:50:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:50:38,029 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 19:50:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:38,950 INFO L93 Difference]: Finished difference Result 208 states and 230 transitions. [2022-11-18 19:50:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:50:38,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 62 [2022-11-18 19:50:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:38,951 INFO L225 Difference]: With dead ends: 208 [2022-11-18 19:50:38,952 INFO L226 Difference]: Without dead ends: 208 [2022-11-18 19:50:38,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:50:38,952 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 167 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:38,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 447 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:50:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-18 19:50:38,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-11-18 19:50:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 155 states have (on average 1.4709677419354839) internal successors, (228), 205 states have internal predecessors, (228), 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 19:50:38,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 230 transitions. [2022-11-18 19:50:38,958 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 230 transitions. Word has length 62 [2022-11-18 19:50:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:38,958 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 230 transitions. [2022-11-18 19:50:38,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 19:50:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 230 transitions. [2022-11-18 19:50:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 19:50:38,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:38,959 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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 19:50:38,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:39,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:39,171 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash 270059550, now seen corresponding path program 1 times [2022-11-18 19:50:39,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:39,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20253912] [2022-11-18 19:50:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:39,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:39,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:39,173 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:39,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 19:50:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:39,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:50:39,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:39,693 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 19:50:39,716 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 19:50:39,760 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 16 treesize of output 12 [2022-11-18 19:50:39,779 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 16 treesize of output 12 [2022-11-18 19:50:39,899 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 23 [2022-11-18 19:50:39,907 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 21 [2022-11-18 19:50:39,988 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 9 [2022-11-18 19:50:39,991 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 25 treesize of output 7 [2022-11-18 19:50:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:40,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:40,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:40,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20253912] [2022-11-18 19:50:40,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20253912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:40,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:40,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:50:40,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38282126] [2022-11-18 19:50:40,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:40,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:50:40,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:50:40,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:40,021 INFO L87 Difference]: Start difference. First operand 208 states and 230 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 19:50:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:41,662 INFO L93 Difference]: Finished difference Result 207 states and 228 transitions. [2022-11-18 19:50:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:50:41,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 62 [2022-11-18 19:50:41,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:41,664 INFO L225 Difference]: With dead ends: 207 [2022-11-18 19:50:41,664 INFO L226 Difference]: Without dead ends: 207 [2022-11-18 19:50:41,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:50:41,665 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 156 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:41,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 523 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:50:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-18 19:50:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-11-18 19:50:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 155 states have (on average 1.4580645161290322) internal successors, (226), 204 states have internal predecessors, (226), 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 19:50:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 228 transitions. [2022-11-18 19:50:41,671 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 228 transitions. Word has length 62 [2022-11-18 19:50:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:41,671 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 228 transitions. [2022-11-18 19:50:41,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 19:50:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 228 transitions. [2022-11-18 19:50:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:50:41,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:41,672 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 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 19:50:41,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:41,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:41,883 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:41,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:41,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1209648968, now seen corresponding path program 1 times [2022-11-18 19:50:41,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:41,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089649732] [2022-11-18 19:50:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:41,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:41,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:41,891 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:41,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 19:50:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:42,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:50:42,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:42,447 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 19:50:42,524 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:50:42,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:50:42,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 19:50:42,701 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 36 treesize of output 36 [2022-11-18 19:50:42,899 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:50:42,899 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 45 treesize of output 46 [2022-11-18 19:50:42,958 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 42 treesize of output 15 [2022-11-18 19:50:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:43,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:43,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:43,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089649732] [2022-11-18 19:50:43,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089649732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:43,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:43,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:50:43,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447443011] [2022-11-18 19:50:43,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:43,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:50:43,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:50:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:50:43,023 INFO L87 Difference]: Start difference. First operand 207 states and 228 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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 19:50:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:44,810 INFO L93 Difference]: Finished difference Result 230 states and 252 transitions. [2022-11-18 19:50:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:50:44,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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 19:50:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:44,813 INFO L225 Difference]: With dead ends: 230 [2022-11-18 19:50:44,813 INFO L226 Difference]: Without dead ends: 230 [2022-11-18 19:50:44,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:50:44,813 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 178 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:44,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 597 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 334 Invalid, 0 Unknown, 81 Unchecked, 1.5s Time] [2022-11-18 19:50:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-18 19:50:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 216. [2022-11-18 19:50:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 164 states have (on average 1.4695121951219512) internal successors, (241), 213 states have internal predecessors, (241), 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 19:50:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 243 transitions. [2022-11-18 19:50:44,819 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 243 transitions. Word has length 66 [2022-11-18 19:50:44,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:44,819 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 243 transitions. [2022-11-18 19:50:44,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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 19:50:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 243 transitions. [2022-11-18 19:50:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:50:44,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:44,821 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 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 19:50:44,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:45,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:45,039 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1209648969, now seen corresponding path program 1 times [2022-11-18 19:50:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:45,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907072848] [2022-11-18 19:50:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:45,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:45,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:45,041 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:45,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 19:50:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:45,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:50:45,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:45,646 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 19:50:45,686 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 5 [2022-11-18 19:50:45,707 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:50:45,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:50:45,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 19:50:45,780 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 16 treesize of output 12 [2022-11-18 19:50:45,918 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 34 treesize of output 34 [2022-11-18 19:50:45,942 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 21 [2022-11-18 19:50:46,148 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:50:46,148 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 58 treesize of output 57 [2022-11-18 19:50:46,172 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 28 treesize of output 30 [2022-11-18 19:50:46,318 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 13 [2022-11-18 19:50:46,328 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 25 treesize of output 7 [2022-11-18 19:50:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:50:46,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:46,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:46,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907072848] [2022-11-18 19:50:46,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907072848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:46,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:50:46,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:50:46,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319512875] [2022-11-18 19:50:46,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:46,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:50:46,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:50:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:50:46,373 INFO L87 Difference]: Start difference. First operand 216 states and 243 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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 19:50:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:48,800 INFO L93 Difference]: Finished difference Result 228 states and 247 transitions. [2022-11-18 19:50:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:50:48,801 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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 19:50:48,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:48,802 INFO L225 Difference]: With dead ends: 228 [2022-11-18 19:50:48,802 INFO L226 Difference]: Without dead ends: 228 [2022-11-18 19:50:48,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:50:48,803 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 320 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:48,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 437 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 19:50:48,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-18 19:50:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 216. [2022-11-18 19:50:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 164 states have (on average 1.4451219512195121) internal successors, (237), 213 states have internal predecessors, (237), 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 19:50:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 239 transitions. [2022-11-18 19:50:48,809 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 239 transitions. Word has length 66 [2022-11-18 19:50:48,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:48,810 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 239 transitions. [2022-11-18 19:50:48,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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 19:50:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 239 transitions. [2022-11-18 19:50:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 19:50:48,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:48,811 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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] [2022-11-18 19:50:48,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:49,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:49,023 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:50:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:49,024 INFO L85 PathProgramCache]: Analyzing trace with hash -249734821, now seen corresponding path program 1 times [2022-11-18 19:50:49,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:49,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001603359] [2022-11-18 19:50:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:49,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:49,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:49,026 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:49,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 19:50:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:49,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:50:49,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:49,673 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 19:50:49,730 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:50:49,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:50:49,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 19:50:49,905 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 36 treesize of output 36 [2022-11-18 19:50:50,096 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:50:50,096 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 45 treesize of output 46 [2022-11-18 19:50:50,277 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:50:50,277 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 45 treesize of output 46 [2022-11-18 19:50:50,359 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 42 treesize of output 15 [2022-11-18 19:50:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 19:50:50,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:52,651 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1339 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1339) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 19:50:52,697 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1338 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1339 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem142#1.base| v_ArrVal_1338))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1339)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-18 19:50:52,723 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1338 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1339 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1338))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1339)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 19:50:52,782 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1338 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1337 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1339 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1337))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1338)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1339)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 19:50:52,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:50:52,844 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 116 treesize of output 78 [2022-11-18 19:50:52,857 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 3221 treesize of output 2564 [2022-11-18 19:50:52,896 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 2560 treesize of output 2056 [2022-11-18 19:50:52,917 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 2056 treesize of output 1580 [2022-11-18 19:50:52,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1580 treesize of output 1524 [2022-11-18 19:51:02,806 INFO L321 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-11-18 19:51:02,806 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 30 treesize of output 30 [2022-11-18 19:51:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2022-11-18 19:51:02,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:51:02,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001603359] [2022-11-18 19:51:02,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001603359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:02,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:02,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2022-11-18 19:51:02,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792602771] [2022-11-18 19:51:02,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:02,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:51:02,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:51:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:51:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=164, Unknown=7, NotChecked=116, Total=342 [2022-11-18 19:51:02,819 INFO L87 Difference]: Start difference. First operand 216 states and 239 transitions. Second operand has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 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 19:51:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:04,324 INFO L93 Difference]: Finished difference Result 218 states and 239 transitions. [2022-11-18 19:51:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:51:04,325 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 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 71 [2022-11-18 19:51:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:04,326 INFO L225 Difference]: With dead ends: 218 [2022-11-18 19:51:04,326 INFO L226 Difference]: Without dead ends: 218 [2022-11-18 19:51:04,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=74, Invalid=207, Unknown=7, NotChecked=132, Total=420 [2022-11-18 19:51:04,327 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 21 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 515 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:04,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1422 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 515 Unchecked, 1.0s Time] [2022-11-18 19:51:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-18 19:51:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2022-11-18 19:51:04,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 164 states have (on average 1.4390243902439024) internal successors, (236), 213 states have internal predecessors, (236), 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 19:51:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 238 transitions. [2022-11-18 19:51:04,333 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 238 transitions. Word has length 71 [2022-11-18 19:51:04,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:04,334 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 238 transitions. [2022-11-18 19:51:04,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 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 19:51:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 238 transitions. [2022-11-18 19:51:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 19:51:04,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:04,335 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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] [2022-11-18 19:51:04,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 19:51:04,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:51:04,551 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2022-11-18 19:51:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash -249734820, now seen corresponding path program 1 times [2022-11-18 19:51:04,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:51:04,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171082391] [2022-11-18 19:51:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:04,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:51:04,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:51:04,553 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:51:04,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86079a9a-da43-4bc2-b01d-18c660dd18fb/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 19:51:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:05,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:51:05,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:05,323 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 19:51:05,386 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:51:05,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:51:05,398 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 6 treesize of output 5 [2022-11-18 19:51:05,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-18 19:51:05,477 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 16 treesize of output 12 [2022-11-18 19:51:05,629 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 34 treesize of output 34 [2022-11-18 19:51:05,657 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 21 [2022-11-18 19:51:05,878 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:51:05,878 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 58 treesize of output 57 [2022-11-18 19:51:05,917 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 28 treesize of output 30 [2022-11-18 19:51:06,223 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:51:06,223 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 58 treesize of output 57 [2022-11-18 19:51:06,238 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 28 treesize of output 30 [2022-11-18 19:51:06,472 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 13 [2022-11-18 19:51:06,484 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 25 treesize of output 7 [2022-11-18 19:51:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-18 19:51:06,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:51:07,892 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base| v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) (_ bv1 64) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem144#1.base| v_ArrVal_1459) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0)))) (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem144#1.base| v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (bvule (bvadd .cse2 .cse1) (bvadd .cse2 (_ bv1 64) .cse1)))))) is different from false [2022-11-18 19:51:07,989 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 .cse1) (bvadd (_ bv1 64) .cse0 .cse1)))) (forall ((v_ArrVal_1459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv1 64) .cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1459) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))))))) is different from false [2022-11-18 19:51:08,167 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd .cse0 (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1459) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))) (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd .cse0 .cse3) (bvadd .cse0 (_ bv1 64) .cse3))))))) is different from false [2022-11-18 19:51:08,288 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse2 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem142#1.base| v_ArrVal_1456) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem142#1.base| v_ArrVal_1457) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((v_ArrVal_1459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem142#1.base| v_ArrVal_1457))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem142#1.base| v_ArrVal_1456) .cse3 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) .cse1 (_ bv1 64)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_1459) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))) is different from false [2022-11-18 19:51:09,151 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1456) (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1457) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3) v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_ArrVal_1459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1457))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv1 64) (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1456) .cse4 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1459) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))))))))) is different from false [2022-11-18 19:51:09,625 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse3 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1459 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1455 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1454 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1455))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_1457))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv1 64) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1454) .cse1 v_ArrVal_1456) .cse2 v_ArrVal_1458) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1459) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_1458 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1455 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1454 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1457 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1456 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1455))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1454) .cse7 v_ArrVal_1456) (select (select (store .cse8 .cse7 v_ArrVal_1457) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3) v_ArrVal_1458))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 .cse6) (bvadd .cse0 (_ bv1 64) .cse6)))))) is different from false [2022-11-18 19:51:09,797 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:09,797 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 227 treesize of output 228 [2022-11-18 19:51:09,827 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:51:09,827 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 214 treesize of output 137 [2022-11-18 19:51:09,844 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 6183 treesize of output 5058 [2022-11-18 19:51:10,022 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 46573 treesize of output 45124 [2022-11-18 19:51:10,421 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 45120 treesize of output 40976 [2022-11-18 19:51:10,618 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 40976 treesize of output 36832 [2022-11-18 19:51:10,766 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 36832 treesize of output 31512 [2022-11-18 19:51:10,972 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 31512 treesize of output 29608 [2022-11-18 19:51:11,102 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 29608 treesize of output 28488 [2022-11-18 19:51:11,237 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 28488 treesize of output 23546