./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 --- 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-6b4ec56 [2022-11-20 11:02:26,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:02:26,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:02:26,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:02:26,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:02:26,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:02:27,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:02:27,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:02:27,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:02:27,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:02:27,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:02:27,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:02:27,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:02:27,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:02:27,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:02:27,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:02:27,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:02:27,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:02:27,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:02:27,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:02:27,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:02:27,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:02:27,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:02:27,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:02:27,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:02:27,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:02:27,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:02:27,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:02:27,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:02:27,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:02:27,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:02:27,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:02:27,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:02:27,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:02:27,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:02:27,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:02:27,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:02:27,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:02:27,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:02:27,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:02:27,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:02:27,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:02:27,065 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:02:27,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:02:27,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:02:27,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:02:27,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:02:27,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:02:27,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:02:27,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:02:27,069 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:02:27,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:02:27,069 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:02:27,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:02:27,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:02:27,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:02:27,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:02:27,071 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:02:27,071 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:02:27,071 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:02:27,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:02:27,072 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:02:27,072 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:02:27,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:02:27,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:02:27,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:02:27,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:02:27,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:02:27,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:02:27,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:02:27,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:02:27,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:02:27,091 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_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 [2022-11-20 11:02:27,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:02:27,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:02:27,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:02:27,423 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:02:27,426 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:02:27,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2022-11-20 11:02:30,539 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:02:30,795 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:02:30,796 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2022-11-20 11:02:30,815 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/data/1efc33a27/24874aa89eb748a2895b7f21a7ac5997/FLAG905016978 [2022-11-20 11:02:30,833 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/data/1efc33a27/24874aa89eb748a2895b7f21a7ac5997 [2022-11-20 11:02:30,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:02:30,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:02:30,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:30,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:02:30,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:02:30,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:30" (1/1) ... [2022-11-20 11:02:30,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4878b1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:30, skipping insertion in model container [2022-11-20 11:02:30,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:30" (1/1) ... [2022-11-20 11:02:30,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:02:30,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:02:31,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:31,274 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) [2022-11-20 11:02:31,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@418a8d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:31, skipping insertion in model container [2022-11-20 11:02:31,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:31,276 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 11:02:31,278 INFO L158 Benchmark]: Toolchain (without parser) took 439.37ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 74.2MB in the beginning and 148.5MB in the end (delta: -74.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:02:31,279 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:02:31,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.70ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 73.8MB in the beginning and 148.5MB in the end (delta: -74.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:02:31,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.70ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 73.8MB in the beginning and 148.5MB in the end (delta: -74.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 530]: 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_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 --- 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-6b4ec56 [2022-11-20 11:02:33,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:02:33,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:02:33,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:02:33,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:02:33,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:02:33,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:02:33,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:02:33,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:02:33,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:02:33,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:02:33,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:02:33,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:02:33,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:02:33,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:02:33,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:02:33,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:02:33,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:02:33,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:02:33,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:02:33,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:02:33,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:02:33,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:02:33,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:02:33,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:02:33,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:02:33,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:02:33,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:02:33,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:02:33,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:02:33,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:02:33,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:02:33,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:02:33,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:02:33,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:02:33,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:02:33,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:02:33,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:02:33,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:02:33,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:02:33,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:02:33,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:02:33,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:02:33,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:02:33,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:02:33,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:02:33,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:02:33,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:02:33,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:02:33,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:02:33,746 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:02:33,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:02:33,747 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:02:33,747 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:02:33,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:02:33,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:02:33,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:02:33,748 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:02:33,748 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:02:33,749 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:02:33,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:02:33,749 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:02:33,749 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:02:33,750 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:02:33,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:02:33,750 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:02:33,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:02:33,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:02:33,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:02:33,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:02:33,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:02:33,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:02:33,752 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:02:33,752 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:02:33,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:02:33,753 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_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71daa4447a811360729951159d42c752715aafb50c3ad4dcb2ed5d242a4f4a78 [2022-11-20 11:02:34,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:02:34,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:02:34,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:02:34,216 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:02:34,216 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:02:34,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2022-11-20 11:02:37,497 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:02:37,728 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:02:37,729 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/sv-benchmarks/c/array-memsafety/bubblesort-alloca-2.i [2022-11-20 11:02:37,741 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/data/29717fc6b/da24d03cd20244eba92fb6633888e181/FLAGcf5a6ddde [2022-11-20 11:02:37,762 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/data/29717fc6b/da24d03cd20244eba92fb6633888e181 [2022-11-20 11:02:37,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:02:37,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:02:37,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:37,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:02:37,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:02:37,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:37" (1/1) ... [2022-11-20 11:02:37,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8b02d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:37, skipping insertion in model container [2022-11-20 11:02:37,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:37" (1/1) ... [2022-11-20 11:02:37,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:02:37,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:02:38,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:38,196 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:02:38,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:02:38,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:38,272 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:02:38,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:38,394 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:02:38,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38 WrapperNode [2022-11-20 11:02:38,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:38,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:02:38,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:02:38,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:02:38,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,445 INFO L138 Inliner]: procedures = 117, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-11-20 11:02:38,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:02:38,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:02:38,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:02:38,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:02:38,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:02:38,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:02:38,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:02:38,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:02:38,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (1/1) ... [2022-11-20 11:02:38,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:02:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:38,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:02:38,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:02:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:02:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:02:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:02:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:02:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:02:38,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:02:38,741 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:02:38,743 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:02:39,152 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:02:39,158 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:02:39,158 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:02:39,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:02:39 BoogieIcfgContainer [2022-11-20 11:02:39,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:02:39,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:02:39,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:02:39,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:02:39,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:02:37" (1/3) ... [2022-11-20 11:02:39,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8731991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:02:39, skipping insertion in model container [2022-11-20 11:02:39,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:38" (2/3) ... [2022-11-20 11:02:39,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8731991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:02:39, skipping insertion in model container [2022-11-20 11:02:39,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:02:39" (3/3) ... [2022-11-20 11:02:39,176 INFO L112 eAbstractionObserver]: Analyzing ICFG bubblesort-alloca-2.i [2022-11-20 11:02:39,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:02:39,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-20 11:02:39,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:02:39,262 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;@20cd3c96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:02:39,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-20 11:02:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:39,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:02:39,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:39,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:02:39,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-11-20 11:02:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:39,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012847116] [2022-11-20 11:02:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:39,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:39,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:39,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:39,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:39,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:02:39,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:39,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:02:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:39,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:39,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:39,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012847116] [2022-11-20 11:02:39,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012847116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:39,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:39,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:02:39,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380695878] [2022-11-20 11:02:39,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:39,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:02:39,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:39,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:02:39,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:39,583 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:39,715 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-20 11:02:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:02:39,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:02:39,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:39,726 INFO L225 Difference]: With dead ends: 40 [2022-11-20 11:02:39,727 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 11:02:39,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:39,734 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:39,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:02:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 11:02:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-20 11:02:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.75) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-20 11:02:39,774 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 6 [2022-11-20 11:02:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:39,774 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-20 11:02:39,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-20 11:02:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:02:39,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:39,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:02:39,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:39,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:39,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:39,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-11-20 11:02:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:39,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664335766] [2022-11-20 11:02:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:39,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:39,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:39,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:39,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:40,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:02:40,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:40,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:02:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:40,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:40,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:40,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664335766] [2022-11-20 11:02:40,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664335766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:40,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:40,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:40,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489133180] [2022-11-20 11:02:40,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:40,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:02:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:02:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:02:40,088 INFO L87 Difference]: Start difference. First operand 38 states and 42 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) [2022-11-20 11:02:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:40,367 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-11-20 11:02:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:02:40,369 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 [2022-11-20 11:02:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:40,370 INFO L225 Difference]: With dead ends: 77 [2022-11-20 11:02:40,370 INFO L226 Difference]: Without dead ends: 77 [2022-11-20 11:02:40,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:02:40,372 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 44 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:40,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 145 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:02:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-20 11:02:40,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2022-11-20 11:02:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-11-20 11:02:40,379 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2022-11-20 11:02:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:40,379 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-11-20 11:02:40,379 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) [2022-11-20 11:02:40,380 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-11-20 11:02:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:02:40,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:40,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:02:40,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:40,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-11-20 11:02:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:40,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523667824] [2022-11-20 11:02:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:40,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:40,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:40,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:40,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:40,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:02:40,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:40,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:02:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:40,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:40,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:40,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523667824] [2022-11-20 11:02:40,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523667824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:40,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:40,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:40,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174745362] [2022-11-20 11:02:40,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:40,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:02:40,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:40,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:02:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:02:40,786 INFO L87 Difference]: Start difference. First operand 41 states and 45 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) [2022-11-20 11:02:40,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:40,824 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-11-20 11:02:40,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:02:40,825 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 [2022-11-20 11:02:40,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:40,826 INFO L225 Difference]: With dead ends: 43 [2022-11-20 11:02:40,826 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 11:02:40,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:02:40,827 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:40,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 94 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-11-20 11:02:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 11:02:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-11-20 11:02:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-20 11:02:40,833 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2022-11-20 11:02:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:40,834 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-20 11:02:40,834 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) [2022-11-20 11:02:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-20 11:02:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:02:40,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:40,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:40,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:41,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:41,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:41,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052082, now seen corresponding path program 1 times [2022-11-20 11:02:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:41,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948385867] [2022-11-20 11:02:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:41,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:41,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:41,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:41,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:41,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:02:41,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:41,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:41,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:41,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948385867] [2022-11-20 11:02:41,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948385867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:41,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:41,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:02:41,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96709988] [2022-11-20 11:02:41,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:41,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:02:41,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:02:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:02:41,203 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:41,289 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2022-11-20 11:02:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:02:41,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:02:41,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:41,297 INFO L225 Difference]: With dead ends: 67 [2022-11-20 11:02:41,297 INFO L226 Difference]: Without dead ends: 67 [2022-11-20 11:02:41,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:02:41,298 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 89 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:41,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 68 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:02:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-20 11:02:41,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2022-11-20 11:02:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-11-20 11:02:41,306 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 9 [2022-11-20 11:02:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:41,306 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-11-20 11:02:41,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-11-20 11:02:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:02:41,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:41,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:41,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:41,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:41,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:41,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052884, now seen corresponding path program 1 times [2022-11-20 11:02:41,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:41,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651582665] [2022-11-20 11:02:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:41,520 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 [2022-11-20 11:02:41,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:41,522 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:41,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:41,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:02:41,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:41,578 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 [2022-11-20 11:02:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:41,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:41,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:41,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651582665] [2022-11-20 11:02:41,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651582665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:41,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:41,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:41,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977671018] [2022-11-20 11:02:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:02:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:41,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:02:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:02:41,605 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:41,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:41,736 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-20 11:02:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:02:41,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:02:41,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:41,742 INFO L225 Difference]: With dead ends: 37 [2022-11-20 11:02:41,742 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 11:02:41,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:02:41,744 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 48 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:41,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 28 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:02:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 11:02:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-20 11:02:41,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:41,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-20 11:02:41,758 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 9 [2022-11-20 11:02:41,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:41,759 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-20 11:02:41,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:41,759 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-20 11:02:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:02:41,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:41,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:41,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:41,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:41,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:41,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052885, now seen corresponding path program 1 times [2022-11-20 11:02:41,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:41,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235388066] [2022-11-20 11:02:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:41,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:41,978 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:41,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:42,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:02:42,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:42,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:02:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:42,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:42,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:42,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235388066] [2022-11-20 11:02:42,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235388066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:42,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:42,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:02:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136522359] [2022-11-20 11:02:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:42,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:02:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:42,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:02:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:02:42,243 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:42,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:42,277 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-20 11:02:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:02:42,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:02:42,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:42,278 INFO L225 Difference]: With dead ends: 41 [2022-11-20 11:02:42,278 INFO L226 Difference]: Without dead ends: 41 [2022-11-20 11:02:42,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:02:42,279 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:42,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 86 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-11-20 11:02:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-20 11:02:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-20 11:02:42,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-20 11:02:42,283 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 9 [2022-11-20 11:02:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:42,284 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-20 11:02:42,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-20 11:02:42,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:02:42,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:42,285 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:42,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:42,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:42,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:42,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-11-20 11:02:42,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:42,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082257958] [2022-11-20 11:02:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:42,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:42,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:42,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:42,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:42,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:02:42,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:42,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:42,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:42,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082257958] [2022-11-20 11:02:42,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082257958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:42,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:42,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:02:42,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358516243] [2022-11-20 11:02:42,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:42,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:02:42,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:42,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:02:42,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:02:42,689 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:42,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:42,797 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2022-11-20 11:02:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:02:42,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:02:42,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:42,799 INFO L225 Difference]: With dead ends: 69 [2022-11-20 11:02:42,799 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 11:02:42,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:02:42,800 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 82 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:42,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 191 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:02:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 11:02:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 45. [2022-11-20 11:02:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-11-20 11:02:42,805 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 10 [2022-11-20 11:02:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:42,806 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-11-20 11:02:42,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:42,806 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-11-20 11:02:42,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:02:42,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:42,807 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:42,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:43,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:43,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-11-20 11:02:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:43,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531744285] [2022-11-20 11:02:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:43,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:43,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:43,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:43,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:43,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:02:43,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:43,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:02:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:43,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:43,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:43,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531744285] [2022-11-20 11:02:43,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531744285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:43,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:43,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 11:02:43,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146485571] [2022-11-20 11:02:43,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:43,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:02:43,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:43,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:02:43,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:02:43,754 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:44,510 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-11-20 11:02:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:02:44,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:02:44,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:44,513 INFO L225 Difference]: With dead ends: 73 [2022-11-20 11:02:44,513 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 11:02:44,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:02:44,514 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 115 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:44,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 111 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 23 Unchecked, 0.7s Time] [2022-11-20 11:02:44,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 11:02:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2022-11-20 11:02:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-11-20 11:02:44,519 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 10 [2022-11-20 11:02:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:44,520 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-11-20 11:02:44,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-11-20 11:02:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:02:44,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:44,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:44,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:44,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:44,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:44,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:44,733 INFO L85 PathProgramCache]: Analyzing trace with hash 363894000, now seen corresponding path program 1 times [2022-11-20 11:02:44,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:44,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843631149] [2022-11-20 11:02:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:44,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:44,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:44,737 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:44,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:44,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:02:44,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:02:44,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:44,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:44,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843631149] [2022-11-20 11:02:44,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843631149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:44,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:44,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:02:44,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738507915] [2022-11-20 11:02:44,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:44,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:02:44,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:02:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:02:44,853 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:45,086 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2022-11-20 11:02:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:02:45,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 11:02:45,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:45,088 INFO L225 Difference]: With dead ends: 75 [2022-11-20 11:02:45,088 INFO L226 Difference]: Without dead ends: 75 [2022-11-20 11:02:45,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:02:45,089 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 30 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:45,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 138 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:02:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-20 11:02:45,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 52. [2022-11-20 11:02:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2022-11-20 11:02:45,094 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 13 [2022-11-20 11:02:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:45,094 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2022-11-20 11:02:45,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2022-11-20 11:02:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:02:45,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:45,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:45,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:45,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:45,296 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:45,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958578, now seen corresponding path program 1 times [2022-11-20 11:02:45,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:45,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963882344] [2022-11-20 11:02:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:45,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:45,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:45,298 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:45,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:45,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:02:45,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:45,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:02:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:45,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:46,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:46,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963882344] [2022-11-20 11:02:46,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963882344] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:46,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:02:46,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-20 11:02:46,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176442855] [2022-11-20 11:02:46,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:46,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:02:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:46,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:02:46,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:02:46,111 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:46,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:46,600 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-11-20 11:02:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:02:46,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 11:02:46,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:46,603 INFO L225 Difference]: With dead ends: 57 [2022-11-20 11:02:46,603 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 11:02:46,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:02:46,604 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:46,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 45 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:02:46,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 11:02:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2022-11-20 11:02:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2022-11-20 11:02:46,608 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 13 [2022-11-20 11:02:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:46,608 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2022-11-20 11:02:46,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2022-11-20 11:02:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:02:46,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:46,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:46,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:46,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:46,810 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1346022463, now seen corresponding path program 1 times [2022-11-20 11:02:46,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:46,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546063135] [2022-11-20 11:02:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:46,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:46,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:46,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:46,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:46,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:02:46,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:46,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:02:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:02:47,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:47,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:47,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546063135] [2022-11-20 11:02:47,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546063135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:47,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:47,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:02:47,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160354685] [2022-11-20 11:02:47,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:47,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:02:47,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:02:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:02:47,256 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:47,715 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2022-11-20 11:02:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:02:47,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 11:02:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:47,717 INFO L225 Difference]: With dead ends: 63 [2022-11-20 11:02:47,717 INFO L226 Difference]: Without dead ends: 63 [2022-11-20 11:02:47,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:02:47,718 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:47,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 82 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2022-11-20 11:02:47,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-20 11:02:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2022-11-20 11:02:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-11-20 11:02:47,722 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 14 [2022-11-20 11:02:47,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:47,722 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-11-20 11:02:47,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:47,726 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-11-20 11:02:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:02:47,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:47,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:47,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:47,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:47,939 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:47,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:47,939 INFO L85 PathProgramCache]: Analyzing trace with hash 267720213, now seen corresponding path program 1 times [2022-11-20 11:02:47,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:47,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434112953] [2022-11-20 11:02:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:47,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:47,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:47,940 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:47,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:48,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:02:48,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:48,153 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_8| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_8| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_8|)))) is different from true [2022-11-20 11:02:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:02:48,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:48,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:48,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434112953] [2022-11-20 11:02:48,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434112953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:48,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:48,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:02:48,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871583125] [2022-11-20 11:02:48,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:48,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:02:48,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:02:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:02:48,156 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:48,217 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2022-11-20 11:02:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:02:48,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 11:02:48,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:48,218 INFO L225 Difference]: With dead ends: 61 [2022-11-20 11:02:48,219 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 11:02:48,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:02:48,219 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:48,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 66 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-11-20 11:02:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 11:02:48,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-11-20 11:02:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 57 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-11-20 11:02:48,223 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 16 [2022-11-20 11:02:48,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:48,223 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-11-20 11:02:48,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-11-20 11:02:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:02:48,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:48,224 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:48,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:48,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:48,433 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash -290583109, now seen corresponding path program 1 times [2022-11-20 11:02:48,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:48,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786847862] [2022-11-20 11:02:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:48,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:48,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:48,435 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:48,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:48,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:02:48,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:02:48,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:02:48,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:48,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786847862] [2022-11-20 11:02:48,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786847862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:48,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:48,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:02:48,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974187117] [2022-11-20 11:02:48,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:48,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:02:48,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:48,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:02:48,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:02:48,618 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:48,710 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-11-20 11:02:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:02:48,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 11:02:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:48,712 INFO L225 Difference]: With dead ends: 60 [2022-11-20 11:02:48,712 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 11:02:48,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:02:48,713 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:48,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 179 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:02:48,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 11:02:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-20 11:02:48,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-11-20 11:02:48,716 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 17 [2022-11-20 11:02:48,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:48,716 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-11-20 11:02:48,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:48,717 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-11-20 11:02:48,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:02:48,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:48,718 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:48,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:48,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:48,927 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:48,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1570446787, now seen corresponding path program 1 times [2022-11-20 11:02:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:48,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772254345] [2022-11-20 11:02:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:48,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:48,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:48,929 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:48,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:48,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:02:48,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:02:49,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:49,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:49,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772254345] [2022-11-20 11:02:49,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772254345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:49,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:49,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:02:49,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609095905] [2022-11-20 11:02:49,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:49,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:02:49,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:49,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:02:49,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:02:49,110 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:49,415 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2022-11-20 11:02:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:02:49,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 11:02:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:49,416 INFO L225 Difference]: With dead ends: 74 [2022-11-20 11:02:49,417 INFO L226 Difference]: Without dead ends: 72 [2022-11-20 11:02:49,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:02:49,417 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 92 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:49,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 84 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:02:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-20 11:02:49,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 46. [2022-11-20 11:02:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.3) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-20 11:02:49,421 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 17 [2022-11-20 11:02:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:49,421 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-20 11:02:49,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-20 11:02:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:02:49,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:49,422 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-20 11:02:49,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:49,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:49,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:49,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:49,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2022-11-20 11:02:49,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:49,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077513693] [2022-11-20 11:02:49,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:02:49,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:49,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:49,625 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:49,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:49,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:02:49,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:02:49,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:02:49,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:49,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:02:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:50,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:51,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:51,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077513693] [2022-11-20 11:02:51,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077513693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:51,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:51,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:02:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495178882] [2022-11-20 11:02:51,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:51,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:02:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:02:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:02:51,043 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:54,071 INFO L93 Difference]: Finished difference Result 197 states and 222 transitions. [2022-11-20 11:02:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:02:54,072 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:02:54,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:54,075 INFO L225 Difference]: With dead ends: 197 [2022-11-20 11:02:54,075 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 11:02:54,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:02:54,078 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 463 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:54,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 319 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 286 Invalid, 0 Unknown, 94 Unchecked, 1.7s Time] [2022-11-20 11:02:54,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 11:02:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 62. [2022-11-20 11:02:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-11-20 11:02:54,087 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 18 [2022-11-20 11:02:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:54,088 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-11-20 11:02:54,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-11-20 11:02:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:02:54,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:54,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:54,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-20 11:02:54,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:54,295 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:54,295 INFO L85 PathProgramCache]: Analyzing trace with hash -511718013, now seen corresponding path program 1 times [2022-11-20 11:02:54,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:54,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944655418] [2022-11-20 11:02:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:54,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:54,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:54,296 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:54,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:54,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:02:54,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:02:54,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:54,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:54,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944655418] [2022-11-20 11:02:54,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944655418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:54,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:54,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:02:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350149843] [2022-11-20 11:02:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:02:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:02:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:02:54,506 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:54,689 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2022-11-20 11:02:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:02:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:02:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:54,692 INFO L225 Difference]: With dead ends: 77 [2022-11-20 11:02:54,692 INFO L226 Difference]: Without dead ends: 77 [2022-11-20 11:02:54,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:02:54,693 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 81 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:54,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 53 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:02:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-20 11:02:54,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2022-11-20 11:02:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.28125) internal successors, (82), 69 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2022-11-20 11:02:54,698 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 18 [2022-11-20 11:02:54,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:54,698 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2022-11-20 11:02:54,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2022-11-20 11:02:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:02:54,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:54,699 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:54,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:54,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:54,911 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:54,911 INFO L85 PathProgramCache]: Analyzing trace with hash -511225436, now seen corresponding path program 1 times [2022-11-20 11:02:54,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:54,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318084840] [2022-11-20 11:02:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:54,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:54,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:54,912 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:54,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:54,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:02:54,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:54,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:02:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:02:55,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:02:56,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:56,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318084840] [2022-11-20 11:02:56,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318084840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:56,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:56,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-11-20 11:02:56,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595929861] [2022-11-20 11:02:56,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:56,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:02:56,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:56,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:02:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:02:56,063 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:56,411 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2022-11-20 11:02:56,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:02:56,412 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:02:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:56,413 INFO L225 Difference]: With dead ends: 82 [2022-11-20 11:02:56,413 INFO L226 Difference]: Without dead ends: 82 [2022-11-20 11:02:56,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:02:56,414 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:56,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 113 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-20 11:02:56,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-20 11:02:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2022-11-20 11:02:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 74 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-11-20 11:02:56,418 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 18 [2022-11-20 11:02:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:56,419 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-11-20 11:02:56,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-11-20 11:02:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:02:56,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:56,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:56,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:56,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:56,627 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:56,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1331880655, now seen corresponding path program 1 times [2022-11-20 11:02:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:56,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445465300] [2022-11-20 11:02:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:56,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:56,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:56,629 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:56,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:56,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:02:56,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:56,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:02:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:56,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:02:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:58,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:58,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445465300] [2022-11-20 11:02:58,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445465300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:02:58,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:02:58,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2022-11-20 11:02:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765738390] [2022-11-20 11:02:58,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:02:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:02:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:02:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:02:58,290 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:59,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:59,110 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2022-11-20 11:02:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:02:59,111 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:02:59,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:59,112 INFO L225 Difference]: With dead ends: 79 [2022-11-20 11:02:59,112 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 11:02:59,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:02:59,113 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:59,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 109 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 5 Unchecked, 0.6s Time] [2022-11-20 11:02:59,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 11:02:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2022-11-20 11:02:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2022-11-20 11:02:59,126 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 19 [2022-11-20 11:02:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:59,127 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2022-11-20 11:02:59,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2022-11-20 11:02:59,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:02:59,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:59,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:59,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:59,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:59,339 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:02:59,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:59,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1637861780, now seen corresponding path program 2 times [2022-11-20 11:02:59,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:59,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644414930] [2022-11-20 11:02:59,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:02:59,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:02:59,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:59,341 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:02:59,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:02:59,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:02:59,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:02:59,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:02:59,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:59,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:03:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:00,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:01,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:01,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644414930] [2022-11-20 11:03:01,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644414930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:01,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:01,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 11:03:01,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595084589] [2022-11-20 11:03:01,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:01,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:03:01,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:03:01,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:03:01,691 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:06,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:06,301 INFO L93 Difference]: Finished difference Result 153 states and 182 transitions. [2022-11-20 11:03:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:03:06,303 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 11:03:06,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:06,304 INFO L225 Difference]: With dead ends: 153 [2022-11-20 11:03:06,304 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 11:03:06,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:03:06,305 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 368 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:06,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 121 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 217 Invalid, 0 Unknown, 9 Unchecked, 1.5s Time] [2022-11-20 11:03:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 11:03:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 96. [2022-11-20 11:03:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.2608695652173914) internal successors, (116), 95 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2022-11-20 11:03:06,310 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 23 [2022-11-20 11:03:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:06,310 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2022-11-20 11:03:06,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2022-11-20 11:03:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 11:03:06,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:06,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:06,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:06,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:06,515 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2028106434, now seen corresponding path program 1 times [2022-11-20 11:03:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:06,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904898165] [2022-11-20 11:03:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:06,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:06,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:06,516 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:06,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:03:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:06,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:03:06,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:06,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:07,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:07,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904898165] [2022-11-20 11:03:07,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904898165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:07,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:07,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-11-20 11:03:07,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246338050] [2022-11-20 11:03:07,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:07,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:03:07,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:07,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:03:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:03:07,054 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:07,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:07,736 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2022-11-20 11:03:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:03:07,737 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 11:03:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:07,738 INFO L225 Difference]: With dead ends: 128 [2022-11-20 11:03:07,738 INFO L226 Difference]: Without dead ends: 128 [2022-11-20 11:03:07,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:03:07,740 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 172 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:07,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 104 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:03:07,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-20 11:03:07,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 110. [2022-11-20 11:03:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 1.2452830188679245) internal successors, (132), 109 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2022-11-20 11:03:07,744 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 25 [2022-11-20 11:03:07,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:07,744 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2022-11-20 11:03:07,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2022-11-20 11:03:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 11:03:07,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:07,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:07,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:07,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:07,951 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1990878972, now seen corresponding path program 2 times [2022-11-20 11:03:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:07,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454714595] [2022-11-20 11:03:07,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:03:07,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:07,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:07,953 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:07,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 11:03:07,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:03:07,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:07,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:03:08,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:08,156 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_14| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_14|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_14| (_ bv0 1)) |c_#valid|))) is different from true [2022-11-20 11:03:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:03:08,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:08,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:08,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454714595] [2022-11-20 11:03:08,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454714595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:08,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:08,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:03:08,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567424991] [2022-11-20 11:03:08,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:08,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:08,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:08,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:03:08,160 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:08,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:08,188 INFO L93 Difference]: Finished difference Result 139 states and 168 transitions. [2022-11-20 11:03:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:08,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 11:03:08,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:08,189 INFO L225 Difference]: With dead ends: 139 [2022-11-20 11:03:08,189 INFO L226 Difference]: Without dead ends: 137 [2022-11-20 11:03:08,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:03:08,190 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:08,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2022-11-20 11:03:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-20 11:03:08,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 130. [2022-11-20 11:03:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 129 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 161 transitions. [2022-11-20 11:03:08,195 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 161 transitions. Word has length 28 [2022-11-20 11:03:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:08,196 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 161 transitions. [2022-11-20 11:03:08,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:08,196 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 161 transitions. [2022-11-20 11:03:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 11:03:08,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:08,197 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:08,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-20 11:03:08,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:08,408 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:08,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1587681108, now seen corresponding path program 1 times [2022-11-20 11:03:08,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:08,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652625447] [2022-11-20 11:03:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:08,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:08,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:08,410 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:08,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 11:03:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:08,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:03:08,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:08,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:09,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:09,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652625447] [2022-11-20 11:03:09,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652625447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:09,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:09,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2022-11-20 11:03:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035833946] [2022-11-20 11:03:09,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:09,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:03:09,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:09,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:03:09,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:03:09,071 INFO L87 Difference]: Start difference. First operand 130 states and 161 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:10,210 INFO L93 Difference]: Finished difference Result 169 states and 204 transitions. [2022-11-20 11:03:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:03:10,211 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 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 29 [2022-11-20 11:03:10,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:10,212 INFO L225 Difference]: With dead ends: 169 [2022-11-20 11:03:10,212 INFO L226 Difference]: Without dead ends: 159 [2022-11-20 11:03:10,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:03:10,214 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 249 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:10,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 124 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:03:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-20 11:03:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 129. [2022-11-20 11:03:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.256) internal successors, (157), 128 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 157 transitions. [2022-11-20 11:03:10,218 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 157 transitions. Word has length 29 [2022-11-20 11:03:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:10,219 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 157 transitions. [2022-11-20 11:03:10,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 157 transitions. [2022-11-20 11:03:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 11:03:10,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:10,220 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:10,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-20 11:03:10,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:10,431 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:10,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1795053594, now seen corresponding path program 2 times [2022-11-20 11:03:10,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:10,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282791054] [2022-11-20 11:03:10,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:03:10,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:10,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:10,432 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:10,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 11:03:10,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:03:10,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:10,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:03:10,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:10,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:03:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:03:11,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:03:11,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:11,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282791054] [2022-11-20 11:03:11,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282791054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:11,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:11,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:03:11,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144047079] [2022-11-20 11:03:11,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:11,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:03:11,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:11,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:03:11,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:03:11,838 INFO L87 Difference]: Start difference. First operand 129 states and 157 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:12,147 INFO L93 Difference]: Finished difference Result 164 states and 199 transitions. [2022-11-20 11:03:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:03:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-20 11:03:12,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:12,149 INFO L225 Difference]: With dead ends: 164 [2022-11-20 11:03:12,149 INFO L226 Difference]: Without dead ends: 164 [2022-11-20 11:03:12,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:03:12,150 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:12,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 186 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-20 11:03:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-20 11:03:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2022-11-20 11:03:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.248) internal successors, (156), 128 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2022-11-20 11:03:12,154 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 31 [2022-11-20 11:03:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:12,154 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2022-11-20 11:03:12,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2022-11-20 11:03:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 11:03:12,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:12,156 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:12,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-20 11:03:12,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:12,367 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:12,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:12,367 INFO L85 PathProgramCache]: Analyzing trace with hash 740071271, now seen corresponding path program 2 times [2022-11-20 11:03:12,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:12,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329865848] [2022-11-20 11:03:12,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:03:12,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:12,368 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:12,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 11:03:12,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:03:12,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:12,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:03:12,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:12,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:03:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:13,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:13,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:13,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329865848] [2022-11-20 11:03:13,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329865848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:13,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:13,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2022-11-20 11:03:13,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193991698] [2022-11-20 11:03:13,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:13,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:03:13,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:03:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:03:13,948 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:16,195 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2022-11-20 11:03:16,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:03:16,196 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 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 32 [2022-11-20 11:03:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:16,196 INFO L225 Difference]: With dead ends: 155 [2022-11-20 11:03:16,196 INFO L226 Difference]: Without dead ends: 155 [2022-11-20 11:03:16,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:03:16,198 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 49 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:16,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 170 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 36 Unchecked, 0.3s Time] [2022-11-20 11:03:16,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-20 11:03:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 148. [2022-11-20 11:03:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 144 states have (on average 1.2916666666666667) internal successors, (186), 147 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2022-11-20 11:03:16,203 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 32 [2022-11-20 11:03:16,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:16,203 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2022-11-20 11:03:16,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2022-11-20 11:03:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:03:16,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:16,204 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:16,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:16,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:16,416 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:16,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1154994598, now seen corresponding path program 1 times [2022-11-20 11:03:16,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:16,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424492026] [2022-11-20 11:03:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:16,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:16,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:16,419 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:16,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 11:03:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:16,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:03:16,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:16,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:03:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:17,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:03:18,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:18,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424492026] [2022-11-20 11:03:18,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424492026] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:18,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:18,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2022-11-20 11:03:18,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714006409] [2022-11-20 11:03:18,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:18,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:03:18,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:03:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:03:18,344 INFO L87 Difference]: Start difference. First operand 148 states and 186 transitions. Second operand has 17 states, 16 states have (on average 3.5) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:19,076 INFO L93 Difference]: Finished difference Result 169 states and 211 transitions. [2022-11-20 11:03:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:03:19,077 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 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 33 [2022-11-20 11:03:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:19,078 INFO L225 Difference]: With dead ends: 169 [2022-11-20 11:03:19,079 INFO L226 Difference]: Without dead ends: 169 [2022-11-20 11:03:19,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:03:19,080 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 37 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:19,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 156 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-11-20 11:03:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-20 11:03:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2022-11-20 11:03:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.286624203821656) internal successors, (202), 160 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 202 transitions. [2022-11-20 11:03:19,085 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 202 transitions. Word has length 33 [2022-11-20 11:03:19,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:19,085 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 202 transitions. [2022-11-20 11:03:19,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 202 transitions. [2022-11-20 11:03:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:03:19,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:19,086 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:19,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:19,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:19,298 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:19,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:19,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1467372908, now seen corresponding path program 3 times [2022-11-20 11:03:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:19,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947861200] [2022-11-20 11:03:19,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:03:19,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:19,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:19,300 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:19,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 11:03:19,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:03:19,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:19,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:03:19,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:19,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:03:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:20,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:20,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:20,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947861200] [2022-11-20 11:03:20,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947861200] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:20,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:20,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-20 11:03:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422903772] [2022-11-20 11:03:20,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:20,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:03:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:03:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:03:20,968 INFO L87 Difference]: Start difference. First operand 161 states and 202 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:21,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:21,610 INFO L93 Difference]: Finished difference Result 199 states and 246 transitions. [2022-11-20 11:03:21,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:03:21,611 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 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 33 [2022-11-20 11:03:21,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:21,612 INFO L225 Difference]: With dead ends: 199 [2022-11-20 11:03:21,612 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 11:03:21,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:03:21,613 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 75 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:21,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 169 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 157 Invalid, 0 Unknown, 12 Unchecked, 0.4s Time] [2022-11-20 11:03:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 11:03:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 190. [2022-11-20 11:03:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 186 states have (on average 1.2741935483870968) internal successors, (237), 189 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2022-11-20 11:03:21,618 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 33 [2022-11-20 11:03:21,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:21,619 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2022-11-20 11:03:21,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:21,619 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2022-11-20 11:03:21,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 11:03:21,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:21,620 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2022-11-20 11:03:21,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-20 11:03:21,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:21,833 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:21,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:21,833 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2022-11-20 11:03:21,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:21,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567283549] [2022-11-20 11:03:21,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:03:21,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:21,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:21,834 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:21,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 11:03:22,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-20 11:03:22,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:22,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:03:22,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:22,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:03:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:22,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:25,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:25,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567283549] [2022-11-20 11:03:25,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567283549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:25,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:25,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 11:03:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616180895] [2022-11-20 11:03:25,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:25,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:03:25,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:03:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:03:25,938 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:03:35,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:03:40,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:03:46,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:46,447 INFO L93 Difference]: Finished difference Result 1668 states and 2115 transitions. [2022-11-20 11:03:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:03:46,449 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2022-11-20 11:03:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:46,452 INFO L225 Difference]: With dead ends: 1668 [2022-11-20 11:03:46,452 INFO L226 Difference]: Without dead ends: 1668 [2022-11-20 11:03:46,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=547, Invalid=1259, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 11:03:46,453 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1538 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 34 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:46,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 872 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 904 Invalid, 2 Unknown, 16 Unchecked, 9.9s Time] [2022-11-20 11:03:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-20 11:03:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 222. [2022-11-20 11:03:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.2706422018348624) internal successors, (277), 221 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 277 transitions. [2022-11-20 11:03:46,469 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 277 transitions. Word has length 34 [2022-11-20 11:03:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:46,469 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 277 transitions. [2022-11-20 11:03:46,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 277 transitions. [2022-11-20 11:03:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 11:03:46,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:46,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:46,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:46,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:46,683 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:46,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:46,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1553594099, now seen corresponding path program 1 times [2022-11-20 11:03:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:46,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21061346] [2022-11-20 11:03:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:46,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:46,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:46,686 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:46,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 11:03:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:46,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:03:46,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:46,992 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_20| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_20| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_20|)))) is different from true [2022-11-20 11:03:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:03:46,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:46,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:46,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21061346] [2022-11-20 11:03:46,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21061346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:46,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:46,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:03:46,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029503880] [2022-11-20 11:03:46,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:46,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:46,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:46,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:46,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:03:46,994 INFO L87 Difference]: Start difference. First operand 222 states and 277 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:47,001 INFO L93 Difference]: Finished difference Result 221 states and 276 transitions. [2022-11-20 11:03:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:47,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 34 [2022-11-20 11:03:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:47,003 INFO L225 Difference]: With dead ends: 221 [2022-11-20 11:03:47,004 INFO L226 Difference]: Without dead ends: 212 [2022-11-20 11:03:47,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:03:47,004 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:47,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 40 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-11-20 11:03:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-20 11:03:47,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-11-20 11:03:47,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 209 states have (on average 1.2583732057416268) internal successors, (263), 211 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 263 transitions. [2022-11-20 11:03:47,011 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 263 transitions. Word has length 34 [2022-11-20 11:03:47,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:47,011 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 263 transitions. [2022-11-20 11:03:47,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:47,012 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 263 transitions. [2022-11-20 11:03:47,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 11:03:47,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:47,013 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:47,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:47,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:47,225 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1786478211, now seen corresponding path program 1 times [2022-11-20 11:03:47,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:47,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564324574] [2022-11-20 11:03:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:47,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:47,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:47,227 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:47,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 11:03:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:47,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:03:47,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:03:47,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:03:48,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:48,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564324574] [2022-11-20 11:03:48,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564324574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:48,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:48,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2022-11-20 11:03:48,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258403794] [2022-11-20 11:03:48,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:48,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:03:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:03:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:03:48,176 INFO L87 Difference]: Start difference. First operand 212 states and 263 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:49,300 INFO L93 Difference]: Finished difference Result 217 states and 265 transitions. [2022-11-20 11:03:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:03:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 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 35 [2022-11-20 11:03:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:49,303 INFO L225 Difference]: With dead ends: 217 [2022-11-20 11:03:49,303 INFO L226 Difference]: Without dead ends: 201 [2022-11-20 11:03:49,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:03:49,304 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 117 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:49,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 133 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:03:49,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-20 11:03:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-20 11:03:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 198 states have (on average 1.2575757575757576) internal successors, (249), 200 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 249 transitions. [2022-11-20 11:03:49,309 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 249 transitions. Word has length 35 [2022-11-20 11:03:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:49,310 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 249 transitions. [2022-11-20 11:03:49,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 249 transitions. [2022-11-20 11:03:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 11:03:49,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:49,311 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:49,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:49,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:49,523 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:49,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:49,523 INFO L85 PathProgramCache]: Analyzing trace with hash -710345958, now seen corresponding path program 2 times [2022-11-20 11:03:49,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:49,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793747242] [2022-11-20 11:03:49,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:03:49,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:49,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:49,525 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:49,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 11:03:49,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:03:49,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:49,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:03:49,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:03:50,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:03:50,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:50,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793747242] [2022-11-20 11:03:50,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793747242] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:50,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:50,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2022-11-20 11:03:50,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513847811] [2022-11-20 11:03:50,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:50,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:03:50,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:50,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:03:50,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:03:50,536 INFO L87 Difference]: Start difference. First operand 201 states and 249 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:52,818 INFO L93 Difference]: Finished difference Result 287 states and 348 transitions. [2022-11-20 11:03:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 11:03:52,819 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 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 39 [2022-11-20 11:03:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:52,820 INFO L225 Difference]: With dead ends: 287 [2022-11-20 11:03:52,820 INFO L226 Difference]: Without dead ends: 265 [2022-11-20 11:03:52,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=348, Invalid=1212, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 11:03:52,821 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 378 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:52,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 174 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:03:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-20 11:03:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 225. [2022-11-20 11:03:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 222 states have (on average 1.2567567567567568) internal successors, (279), 224 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 279 transitions. [2022-11-20 11:03:52,827 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 279 transitions. Word has length 39 [2022-11-20 11:03:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:52,827 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 279 transitions. [2022-11-20 11:03:52,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:52,828 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 279 transitions. [2022-11-20 11:03:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:03:52,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:52,828 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:52,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:53,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:53,041 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:03:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash 799217830, now seen corresponding path program 4 times [2022-11-20 11:03:53,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:53,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187722295] [2022-11-20 11:03:53,042 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:03:53,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:03:53,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:53,043 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:03:53,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 11:03:53,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:03:53,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:53,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:03:53,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:53,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:03:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:03:54,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:03:56,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:56,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187722295] [2022-11-20 11:03:56,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187722295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:56,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:03:56,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 11:03:56,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096135631] [2022-11-20 11:03:56,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:56,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:03:56,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:56,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:03:56,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:03:56,544 INFO L87 Difference]: Start difference. First operand 225 states and 279 transitions. Second operand has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:05,130 INFO L93 Difference]: Finished difference Result 372 states and 453 transitions. [2022-11-20 11:04:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:04:05,131 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 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 41 [2022-11-20 11:04:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:05,133 INFO L225 Difference]: With dead ends: 372 [2022-11-20 11:04:05,133 INFO L226 Difference]: Without dead ends: 372 [2022-11-20 11:04:05,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=577, Invalid=1493, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 11:04:05,134 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 608 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:05,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 136 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 333 Invalid, 0 Unknown, 70 Unchecked, 3.1s Time] [2022-11-20 11:04:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-20 11:04:05,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 331. [2022-11-20 11:04:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 328 states have (on average 1.2591463414634145) internal successors, (413), 330 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 413 transitions. [2022-11-20 11:04:05,146 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 413 transitions. Word has length 41 [2022-11-20 11:04:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:05,146 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 413 transitions. [2022-11-20 11:04:05,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 413 transitions. [2022-11-20 11:04:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:04:05,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:05,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:05,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:05,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:05,360 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:04:05,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1388873166, now seen corresponding path program 1 times [2022-11-20 11:04:05,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:05,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943451966] [2022-11-20 11:04:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:05,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:05,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:05,362 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:04:05,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 11:04:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:05,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:04:05,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:05,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:04:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:04:06,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:04:08,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:08,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943451966] [2022-11-20 11:04:08,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943451966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:04:08,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:04:08,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2022-11-20 11:04:08,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487513943] [2022-11-20 11:04:08,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:08,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:04:08,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:04:08,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:04:08,168 INFO L87 Difference]: Start difference. First operand 331 states and 413 transitions. Second operand has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:11,406 INFO L93 Difference]: Finished difference Result 409 states and 504 transitions. [2022-11-20 11:04:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:04:11,407 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 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 41 [2022-11-20 11:04:11,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:11,408 INFO L225 Difference]: With dead ends: 409 [2022-11-20 11:04:11,408 INFO L226 Difference]: Without dead ends: 399 [2022-11-20 11:04:11,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=384, Invalid=1098, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 11:04:11,409 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 226 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:11,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 83 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 124 Invalid, 0 Unknown, 48 Unchecked, 0.6s Time] [2022-11-20 11:04:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-20 11:04:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 387. [2022-11-20 11:04:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 384 states have (on average 1.25) internal successors, (480), 386 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 480 transitions. [2022-11-20 11:04:11,419 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 480 transitions. Word has length 41 [2022-11-20 11:04:11,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:11,419 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 480 transitions. [2022-11-20 11:04:11,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 480 transitions. [2022-11-20 11:04:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:04:11,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:11,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:11,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:11,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:11,633 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:04:11,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:11,634 INFO L85 PathProgramCache]: Analyzing trace with hash -873673024, now seen corresponding path program 2 times [2022-11-20 11:04:11,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:11,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713952222] [2022-11-20 11:04:11,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:04:11,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:11,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:11,635 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:04:11,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-20 11:04:11,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:04:11,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:11,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:04:11,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:11,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:04:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:04:12,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:04:13,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:13,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713952222] [2022-11-20 11:04:13,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713952222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:04:13,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:04:13,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:04:13,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981446749] [2022-11-20 11:04:13,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:13,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:04:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:13,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:04:13,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:04:13,287 INFO L87 Difference]: Start difference. First operand 387 states and 480 transitions. Second operand has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:13,468 INFO L93 Difference]: Finished difference Result 387 states and 477 transitions. [2022-11-20 11:04:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:04:13,469 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 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 41 [2022-11-20 11:04:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:13,470 INFO L225 Difference]: With dead ends: 387 [2022-11-20 11:04:13,470 INFO L226 Difference]: Without dead ends: 382 [2022-11-20 11:04:13,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:04:13,471 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:13,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 110 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-20 11:04:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-20 11:04:13,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 285. [2022-11-20 11:04:13,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 282 states have (on average 1.2092198581560283) internal successors, (341), 284 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 341 transitions. [2022-11-20 11:04:13,478 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 341 transitions. Word has length 41 [2022-11-20 11:04:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:13,478 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 341 transitions. [2022-11-20 11:04:13,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.076923076923077) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 341 transitions. [2022-11-20 11:04:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:04:13,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:13,480 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:13,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:13,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:13,692 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:04:13,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash -990897512, now seen corresponding path program 3 times [2022-11-20 11:04:13,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:13,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33549173] [2022-11-20 11:04:13,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:04:13,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:13,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:13,693 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:04:13,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 11:04:13,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:04:13,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:13,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:04:13,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:13,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:04:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 11:04:15,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 11:04:16,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:16,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33549173] [2022-11-20 11:04:16,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33549173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:04:16,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:04:16,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-11-20 11:04:16,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851439944] [2022-11-20 11:04:16,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:16,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:04:16,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:16,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:04:16,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:04:16,102 INFO L87 Difference]: Start difference. First operand 285 states and 341 transitions. Second operand has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:16,805 INFO L93 Difference]: Finished difference Result 345 states and 417 transitions. [2022-11-20 11:04:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:04:16,806 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-20 11:04:16,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:16,808 INFO L225 Difference]: With dead ends: 345 [2022-11-20 11:04:16,808 INFO L226 Difference]: Without dead ends: 345 [2022-11-20 11:04:16,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:04:16,809 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:16,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 83 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-20 11:04:16,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-20 11:04:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 322. [2022-11-20 11:04:16,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 319 states have (on average 1.219435736677116) internal successors, (389), 321 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:16,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 389 transitions. [2022-11-20 11:04:16,815 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 389 transitions. Word has length 44 [2022-11-20 11:04:16,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:16,816 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 389 transitions. [2022-11-20 11:04:16,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 389 transitions. [2022-11-20 11:04:16,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:04:16,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:16,817 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:16,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:17,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:17,029 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:04:17,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:17,029 INFO L85 PathProgramCache]: Analyzing trace with hash -653051813, now seen corresponding path program 3 times [2022-11-20 11:04:17,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:17,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873473747] [2022-11-20 11:04:17,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:04:17,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:17,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:17,030 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:04:17,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-20 11:04:17,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:04:17,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:17,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:04:17,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:17,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:04:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 11:04:17,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 11:04:20,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:20,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873473747] [2022-11-20 11:04:20,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873473747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:04:20,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:04:20,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-11-20 11:04:20,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752266331] [2022-11-20 11:04:20,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:20,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:04:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:04:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:04:20,849 INFO L87 Difference]: Start difference. First operand 322 states and 389 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:27,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:27,594 INFO L93 Difference]: Finished difference Result 432 states and 518 transitions. [2022-11-20 11:04:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:04:27,596 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-20 11:04:27,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:27,598 INFO L225 Difference]: With dead ends: 432 [2022-11-20 11:04:27,598 INFO L226 Difference]: Without dead ends: 432 [2022-11-20 11:04:27,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=401, Invalid=1081, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 11:04:27,599 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 352 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:27,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 128 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 262 Invalid, 0 Unknown, 30 Unchecked, 1.9s Time] [2022-11-20 11:04:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-20 11:04:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 403. [2022-11-20 11:04:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 400 states have (on average 1.2075) internal successors, (483), 402 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 483 transitions. [2022-11-20 11:04:27,606 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 483 transitions. Word has length 45 [2022-11-20 11:04:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:27,607 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 483 transitions. [2022-11-20 11:04:27,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:27,607 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 483 transitions. [2022-11-20 11:04:27,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 11:04:27,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:27,608 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:27,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-20 11:04:27,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:27,819 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:04:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1128392693, now seen corresponding path program 2 times [2022-11-20 11:04:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:27,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467020577] [2022-11-20 11:04:27,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:04:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:27,822 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:04:27,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-20 11:04:27,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:04:27,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:27,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:04:27,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:27,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:04:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:04:28,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:31,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:31,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467020577] [2022-11-20 11:04:31,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467020577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:04:31,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:04:31,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-20 11:04:31,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880191748] [2022-11-20 11:04:31,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:31,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:04:31,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:31,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:04:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:04:31,830 INFO L87 Difference]: Start difference. First operand 403 states and 483 transitions. Second operand has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:33,955 INFO L93 Difference]: Finished difference Result 426 states and 506 transitions. [2022-11-20 11:04:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:04:33,956 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 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 47 [2022-11-20 11:04:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:33,958 INFO L225 Difference]: With dead ends: 426 [2022-11-20 11:04:33,958 INFO L226 Difference]: Without dead ends: 407 [2022-11-20 11:04:33,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:04:33,959 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 67 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:33,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 240 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 256 Invalid, 0 Unknown, 53 Unchecked, 1.4s Time] [2022-11-20 11:04:33,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-20 11:04:33,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 391. [2022-11-20 11:04:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 388 states have (on average 1.2061855670103092) internal successors, (468), 390 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 468 transitions. [2022-11-20 11:04:33,966 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 468 transitions. Word has length 47 [2022-11-20 11:04:33,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:33,967 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 468 transitions. [2022-11-20 11:04:33,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.56) internal successors, (89), 25 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 468 transitions. [2022-11-20 11:04:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 11:04:33,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:33,968 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:33,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:34,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:34,181 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:04:34,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:34,181 INFO L85 PathProgramCache]: Analyzing trace with hash -263973151, now seen corresponding path program 1 times [2022-11-20 11:04:34,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:34,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998411214] [2022-11-20 11:04:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:34,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:34,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:34,182 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:04:34,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-20 11:04:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:34,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:04:34,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:04:34,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:04:36,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:36,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998411214] [2022-11-20 11:04:36,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998411214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:04:36,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:04:36,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2022-11-20 11:04:36,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808523142] [2022-11-20 11:04:36,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:36,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:04:36,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:36,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:04:36,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:04:36,084 INFO L87 Difference]: Start difference. First operand 391 states and 468 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:37,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:37,787 INFO L93 Difference]: Finished difference Result 412 states and 488 transitions. [2022-11-20 11:04:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:04:37,788 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 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 50 [2022-11-20 11:04:37,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:37,789 INFO L225 Difference]: With dead ends: 412 [2022-11-20 11:04:37,789 INFO L226 Difference]: Without dead ends: 385 [2022-11-20 11:04:37,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=238, Invalid=952, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 11:04:37,790 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 206 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:37,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 181 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:04:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-20 11:04:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-11-20 11:04:37,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 382 states have (on average 1.206806282722513) internal successors, (461), 384 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:37,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 461 transitions. [2022-11-20 11:04:37,798 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 461 transitions. Word has length 50 [2022-11-20 11:04:37,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:37,798 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 461 transitions. [2022-11-20 11:04:37,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:37,798 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 461 transitions. [2022-11-20 11:04:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 11:04:37,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:37,799 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:37,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:38,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:38,012 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:04:38,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:38,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1579950574, now seen corresponding path program 3 times [2022-11-20 11:04:38,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:38,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91173394] [2022-11-20 11:04:38,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:04:38,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:38,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:38,014 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:04:38,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-20 11:04:38,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:04:38,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:38,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:04:38,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:38,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:04:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 11:04:39,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:04:39,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:39,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91173394] [2022-11-20 11:04:39,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91173394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:39,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:39,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:04:39,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797013500] [2022-11-20 11:04:39,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:39,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:04:39,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:39,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:04:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:04:39,024 INFO L87 Difference]: Start difference. First operand 385 states and 461 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:39,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:39,092 INFO L93 Difference]: Finished difference Result 394 states and 469 transitions. [2022-11-20 11:04:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:04:39,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-20 11:04:39,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:39,095 INFO L225 Difference]: With dead ends: 394 [2022-11-20 11:04:39,095 INFO L226 Difference]: Without dead ends: 394 [2022-11-20 11:04:39,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:04:39,095 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:39,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-11-20 11:04:39,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-20 11:04:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 357. [2022-11-20 11:04:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 354 states have (on average 1.192090395480226) internal successors, (422), 356 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 422 transitions. [2022-11-20 11:04:39,102 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 422 transitions. Word has length 51 [2022-11-20 11:04:39,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:39,103 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 422 transitions. [2022-11-20 11:04:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:39,103 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 422 transitions. [2022-11-20 11:04:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 11:04:39,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:39,104 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:39,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:39,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:39,316 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:04:39,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:39,316 INFO L85 PathProgramCache]: Analyzing trace with hash 737382308, now seen corresponding path program 2 times [2022-11-20 11:04:39,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:39,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990436344] [2022-11-20 11:04:39,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:04:39,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:39,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:39,318 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:04:39,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-20 11:04:39,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:04:39,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:39,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:04:39,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:39,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:04:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:04:40,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:04:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 1 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:04:44,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:44,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990436344] [2022-11-20 11:04:44,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990436344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:04:44,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:04:44,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2022-11-20 11:04:44,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442569722] [2022-11-20 11:04:44,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:04:44,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:04:44,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:44,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:04:44,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:04:44,492 INFO L87 Difference]: Start difference. First operand 357 states and 422 transitions. Second operand has 23 states, 22 states have (on average 3.727272727272727) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:54,279 INFO L93 Difference]: Finished difference Result 449 states and 522 transitions. [2022-11-20 11:04:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:04:54,281 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.727272727272727) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 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 54 [2022-11-20 11:04:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:54,281 INFO L225 Difference]: With dead ends: 449 [2022-11-20 11:04:54,281 INFO L226 Difference]: Without dead ends: 449 [2022-11-20 11:04:54,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=633, Invalid=1917, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 11:04:54,283 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 636 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:54,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 240 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 422 Invalid, 0 Unknown, 130 Unchecked, 3.1s Time] [2022-11-20 11:04:54,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-20 11:04:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 249. [2022-11-20 11:04:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.1497975708502024) internal successors, (284), 248 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 284 transitions. [2022-11-20 11:04:54,288 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 284 transitions. Word has length 54 [2022-11-20 11:04:54,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:54,288 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 284 transitions. [2022-11-20 11:04:54,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.727272727272727) internal successors, (82), 23 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 284 transitions. [2022-11-20 11:04:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 11:04:54,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:54,289 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:54,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-20 11:04:54,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:54,495 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:04:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:54,495 INFO L85 PathProgramCache]: Analyzing trace with hash 509031846, now seen corresponding path program 5 times [2022-11-20 11:04:54,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:54,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758804801] [2022-11-20 11:04:54,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:04:54,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:04:54,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:54,496 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:04:54,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-20 11:04:54,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-20 11:04:54,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:54,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:04:54,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:54,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:04:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 33 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:56,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:01,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:05:01,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758804801] [2022-11-20 11:05:01,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758804801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:01,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:05:01,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2022-11-20 11:05:01,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226369710] [2022-11-20 11:05:01,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:01,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:05:01,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:05:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:05:01,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:05:01,691 INFO L87 Difference]: Start difference. First operand 249 states and 284 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:05,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:05,631 INFO L93 Difference]: Finished difference Result 334 states and 384 transitions. [2022-11-20 11:05:05,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:05:05,632 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 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 61 [2022-11-20 11:05:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:05,633 INFO L225 Difference]: With dead ends: 334 [2022-11-20 11:05:05,633 INFO L226 Difference]: Without dead ends: 332 [2022-11-20 11:05:05,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=246, Invalid=1314, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 11:05:05,634 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 146 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:05,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 350 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 404 Invalid, 0 Unknown, 42 Unchecked, 2.3s Time] [2022-11-20 11:05:05,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-20 11:05:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 303. [2022-11-20 11:05:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 301 states have (on average 1.169435215946844) internal successors, (352), 302 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 352 transitions. [2022-11-20 11:05:05,639 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 352 transitions. Word has length 61 [2022-11-20 11:05:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:05,640 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 352 transitions. [2022-11-20 11:05:05,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:05,640 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 352 transitions. [2022-11-20 11:05:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 11:05:05,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:05,641 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:05,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:05,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:05:05,855 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:05:05,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1008871624, now seen corresponding path program 4 times [2022-11-20 11:05:05,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:05:05,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645848107] [2022-11-20 11:05:05,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:05:05,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:05:05,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:05:05,857 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:05:05,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-20 11:05:06,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:05:06,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:06,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:05:06,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 76 proven. 50 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:05:06,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 83 proven. 43 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:05:07,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:05:07,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645848107] [2022-11-20 11:05:07,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645848107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:07,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:05:07,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2022-11-20 11:05:07,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276908821] [2022-11-20 11:05:07,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:07,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:05:07,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:05:07,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:05:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:05:07,800 INFO L87 Difference]: Start difference. First operand 303 states and 352 transitions. Second operand has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:11,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:11,592 INFO L93 Difference]: Finished difference Result 330 states and 378 transitions. [2022-11-20 11:05:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:05:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 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 64 [2022-11-20 11:05:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:11,594 INFO L225 Difference]: With dead ends: 330 [2022-11-20 11:05:11,595 INFO L226 Difference]: Without dead ends: 278 [2022-11-20 11:05:11,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=535, Invalid=2015, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 11:05:11,595 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 499 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:11,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 249 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:05:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-20 11:05:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 276. [2022-11-20 11:05:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 274 states have (on average 1.167883211678832) internal successors, (320), 275 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 320 transitions. [2022-11-20 11:05:11,604 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 320 transitions. Word has length 64 [2022-11-20 11:05:11,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:11,604 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 320 transitions. [2022-11-20 11:05:11,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 320 transitions. [2022-11-20 11:05:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 11:05:11,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:11,605 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2022-11-20 11:05:11,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:05:11,820 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:05:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash 58542645, now seen corresponding path program 4 times [2022-11-20 11:05:11,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:05:11,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695278109] [2022-11-20 11:05:11,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:05:11,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:05:11,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:05:11,821 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:05:11,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-20 11:05:11,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:05:11,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:11,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:05:11,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:11,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:05:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:13,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:23,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:05:23,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695278109] [2022-11-20 11:05:23,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695278109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:23,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:05:23,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2022-11-20 11:05:23,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086409170] [2022-11-20 11:05:23,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:23,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 11:05:23,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:05:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 11:05:23,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 11:05:23,778 INFO L87 Difference]: Start difference. First operand 276 states and 320 transitions. Second operand has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:05:35,272 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:05:37,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:39,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:41,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:43,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:05:49,899 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:06:01,297 WARN L233 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:06:03,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:05,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:07,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:09,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:16,472 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:06:28,213 WARN L233 SmtUtils]: Spent 10.58s on a formula simplification. DAG size of input: 152 DAG size of output: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:06:30,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:32,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:34,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:36,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:50,562 WARN L233 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 141 DAG size of output: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:06:53,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:55,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:57,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:06:59,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:09,434 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:07:12,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:14,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:16,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:18,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:27,399 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 120 DAG size of output: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:07:29,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:31,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:33,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:35,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:44,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:46,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:48,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:50,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:57,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:59,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:01,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:08,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:10,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:16,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:18,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:23,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:25,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:30,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:33,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:38,159 INFO L93 Difference]: Finished difference Result 4470 states and 5066 transitions. [2022-11-20 11:08:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-20 11:08:38,161 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 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 66 [2022-11-20 11:08:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:38,167 INFO L225 Difference]: With dead ends: 4470 [2022-11-20 11:08:38,167 INFO L226 Difference]: Without dead ends: 4470 [2022-11-20 11:08:38,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2429 ImplicationChecksByTransitivity, 110.9s TimeCoverageRelationStatistics Valid=2212, Invalid=5270, Unknown=0, NotChecked=0, Total=7482 [2022-11-20 11:08:38,169 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 5068 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 3379 mSolverCounterSat, 144 mSolverCounterUnsat, 37 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5068 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 3746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3379 IncrementalHoareTripleChecker+Invalid, 37 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 90.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:38,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5068 Valid, 2825 Invalid, 3746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3379 Invalid, 37 Unknown, 186 Unchecked, 90.9s Time] [2022-11-20 11:08:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2022-11-20 11:08:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 340. [2022-11-20 11:08:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 338 states have (on average 1.183431952662722) internal successors, (400), 339 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 400 transitions. [2022-11-20 11:08:38,188 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 400 transitions. Word has length 66 [2022-11-20 11:08:38,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:38,188 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 400 transitions. [2022-11-20 11:08:38,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:38,189 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 400 transitions. [2022-11-20 11:08:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:08:38,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:38,190 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:38,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:38,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:38,403 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:08:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1463771587, now seen corresponding path program 1 times [2022-11-20 11:08:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:38,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379290687] [2022-11-20 11:08:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:08:38,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:38,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:38,405 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:38,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-20 11:08:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:38,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:08:38,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:38,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:08:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 33 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:39,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:45,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379290687] [2022-11-20 11:08:45,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379290687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:45,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:45,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2022-11-20 11:08:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122042024] [2022-11-20 11:08:45,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:45,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:08:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:45,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:08:45,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:08:45,630 INFO L87 Difference]: Start difference. First operand 340 states and 400 transitions. Second operand has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:49,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:49,866 INFO L93 Difference]: Finished difference Result 498 states and 587 transitions. [2022-11-20 11:08:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:08:49,867 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 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 67 [2022-11-20 11:08:49,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:49,868 INFO L225 Difference]: With dead ends: 498 [2022-11-20 11:08:49,868 INFO L226 Difference]: Without dead ends: 494 [2022-11-20 11:08:49,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=246, Invalid=1314, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 11:08:49,869 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 121 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:49,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 565 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 497 Invalid, 0 Unknown, 69 Unchecked, 2.5s Time] [2022-11-20 11:08:49,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-20 11:08:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 417. [2022-11-20 11:08:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 415 states have (on average 1.1951807228915663) internal successors, (496), 416 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 496 transitions. [2022-11-20 11:08:49,876 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 496 transitions. Word has length 67 [2022-11-20 11:08:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:49,876 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 496 transitions. [2022-11-20 11:08:49,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 496 transitions. [2022-11-20 11:08:49,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:08:49,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:49,878 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:49,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:50,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:50,090 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:08:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash 81905071, now seen corresponding path program 2 times [2022-11-20 11:08:50,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:50,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850385054] [2022-11-20 11:08:50,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:08:50,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:50,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:50,092 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:50,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-20 11:08:50,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:08:50,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:50,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:08:50,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:50,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:08:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:08:52,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:08:57,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:57,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850385054] [2022-11-20 11:08:57,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850385054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:57,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:57,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-20 11:08:57,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995843873] [2022-11-20 11:08:57,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:57,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 11:08:57,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:57,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 11:08:57,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:08:57,531 INFO L87 Difference]: Start difference. First operand 417 states and 496 transitions. Second operand has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:54,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:54,248 INFO L93 Difference]: Finished difference Result 615 states and 725 transitions. [2022-11-20 11:09:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-20 11:09:54,250 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 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 67 [2022-11-20 11:09:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:54,251 INFO L225 Difference]: With dead ends: 615 [2022-11-20 11:09:54,251 INFO L226 Difference]: Without dead ends: 615 [2022-11-20 11:09:54,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2966 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=2269, Invalid=6661, Unknown=0, NotChecked=0, Total=8930 [2022-11-20 11:09:54,253 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1368 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:54,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 551 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1200 Invalid, 0 Unknown, 118 Unchecked, 10.7s Time] [2022-11-20 11:09:54,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-20 11:09:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 453. [2022-11-20 11:09:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 451 states have (on average 1.1796008869179602) internal successors, (532), 452 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 532 transitions. [2022-11-20 11:09:54,264 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 532 transitions. Word has length 67 [2022-11-20 11:09:54,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:54,264 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 532 transitions. [2022-11-20 11:09:54,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 532 transitions. [2022-11-20 11:09:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 11:09:54,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:54,266 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:54,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:54,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:54,479 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:09:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash -273652577, now seen corresponding path program 5 times [2022-11-20 11:09:54,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:54,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351670065] [2022-11-20 11:09:54,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:09:54,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:54,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:54,481 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:54,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-20 11:09:54,810 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-20 11:09:54,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:54,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:09:54,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 31 proven. 104 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:09:55,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 31 proven. 104 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:09:56,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351670065] [2022-11-20 11:09:56,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351670065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:56,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:56,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-20 11:09:56,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927459382] [2022-11-20 11:09:56,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:56,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:09:56,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:56,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:09:56,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:09:56,524 INFO L87 Difference]: Start difference. First operand 453 states and 532 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:58,170 INFO L93 Difference]: Finished difference Result 550 states and 635 transitions. [2022-11-20 11:09:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:09:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 0 states have call successors, (0), 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 68 [2022-11-20 11:09:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:58,173 INFO L225 Difference]: With dead ends: 550 [2022-11-20 11:09:58,173 INFO L226 Difference]: Without dead ends: 505 [2022-11-20 11:09:58,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:09:58,174 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 323 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:58,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 454 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 11:09:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-11-20 11:09:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 491. [2022-11-20 11:09:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 489 states have (on average 1.1738241308793456) internal successors, (574), 490 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 574 transitions. [2022-11-20 11:09:58,180 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 574 transitions. Word has length 68 [2022-11-20 11:09:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:58,180 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 574 transitions. [2022-11-20 11:09:58,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 574 transitions. [2022-11-20 11:09:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 11:09:58,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:58,182 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:58,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:58,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:58,396 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:09:58,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:58,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1428738709, now seen corresponding path program 6 times [2022-11-20 11:09:58,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:58,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276514549] [2022-11-20 11:09:58,397 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:09:58,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:58,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:58,398 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:58,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-20 11:09:58,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-20 11:09:58,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:58,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 11:09:58,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:58,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:10:00,459 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 19 treesize of output 15 [2022-11-20 11:10:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 98 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 11:10:00,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 95 proven. 100 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:10:04,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:04,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276514549] [2022-11-20 11:10:04,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276514549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:04,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:04,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2022-11-20 11:10:04,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111888152] [2022-11-20 11:10:04,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:04,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:10:04,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:04,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:10:04,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:10:04,430 INFO L87 Difference]: Start difference. First operand 491 states and 574 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:11,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:11,188 INFO L93 Difference]: Finished difference Result 568 states and 655 transitions. [2022-11-20 11:10:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:10:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 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 73 [2022-11-20 11:10:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:11,190 INFO L225 Difference]: With dead ends: 568 [2022-11-20 11:10:11,191 INFO L226 Difference]: Without dead ends: 469 [2022-11-20 11:10:11,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=639, Invalid=2783, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 11:10:11,192 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 861 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:11,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 588 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 11:10:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-20 11:10:11,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2022-11-20 11:10:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 467 states have (on average 1.1734475374732334) internal successors, (548), 468 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 548 transitions. [2022-11-20 11:10:11,199 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 548 transitions. Word has length 73 [2022-11-20 11:10:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:11,199 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 548 transitions. [2022-11-20 11:10:11,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 548 transitions. [2022-11-20 11:10:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 11:10:11,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:11,200 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:11,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:11,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:11,415 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:10:11,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash 348270194, now seen corresponding path program 7 times [2022-11-20 11:10:11,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:11,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189857262] [2022-11-20 11:10:11,416 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:10:11,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:11,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:11,417 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:10:11,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-20 11:10:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:11,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:10:11,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:11,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:10:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:10:13,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 1 proven. 173 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:10:18,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:18,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189857262] [2022-11-20 11:10:18,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189857262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:18,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:18,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2022-11-20 11:10:18,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464260606] [2022-11-20 11:10:18,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:18,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 11:10:18,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:18,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 11:10:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:10:18,842 INFO L87 Difference]: Start difference. First operand 469 states and 548 transitions. Second operand has 33 states, 32 states have (on average 3.5) internal successors, (112), 33 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:37,226 INFO L93 Difference]: Finished difference Result 676 states and 780 transitions. [2022-11-20 11:10:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 11:10:37,228 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.5) internal successors, (112), 33 states have internal predecessors, (112), 0 states have call successors, (0), 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 77 [2022-11-20 11:10:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:37,229 INFO L225 Difference]: With dead ends: 676 [2022-11-20 11:10:37,229 INFO L226 Difference]: Without dead ends: 676 [2022-11-20 11:10:37,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1557 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=985, Invalid=4271, Unknown=0, NotChecked=0, Total=5256 [2022-11-20 11:10:37,230 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 668 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:37,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 621 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 946 Invalid, 0 Unknown, 200 Unchecked, 6.0s Time] [2022-11-20 11:10:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-11-20 11:10:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 607. [2022-11-20 11:10:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 605 states have (on average 1.1818181818181819) internal successors, (715), 606 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 715 transitions. [2022-11-20 11:10:37,238 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 715 transitions. Word has length 77 [2022-11-20 11:10:37,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:37,239 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 715 transitions. [2022-11-20 11:10:37,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.5) internal successors, (112), 33 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:37,239 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 715 transitions. [2022-11-20 11:10:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 11:10:37,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:37,240 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:37,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-20 11:10:37,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:37,455 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:10:37,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash -198049911, now seen corresponding path program 3 times [2022-11-20 11:10:37,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:37,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971587676] [2022-11-20 11:10:37,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:10:37,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:37,456 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:10:37,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-20 11:10:37,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:10:37,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:37,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:10:37,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:37,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:10:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-20 11:10:39,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 1 proven. 118 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-20 11:10:46,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:46,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971587676] [2022-11-20 11:10:46,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971587676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:46,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:46,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 23 [2022-11-20 11:10:46,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219956204] [2022-11-20 11:10:46,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:46,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:10:46,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:46,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:10:46,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:10:46,158 INFO L87 Difference]: Start difference. First operand 607 states and 715 transitions. Second operand has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:57,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:11:03,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:11:12,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:11:16,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:16,612 INFO L93 Difference]: Finished difference Result 645 states and 750 transitions. [2022-11-20 11:11:16,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-20 11:11:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 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 83 [2022-11-20 11:11:16,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:16,614 INFO L225 Difference]: With dead ends: 645 [2022-11-20 11:11:16,614 INFO L226 Difference]: Without dead ends: 645 [2022-11-20 11:11:16,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=1222, Invalid=3890, Unknown=0, NotChecked=0, Total=5112 [2022-11-20 11:11:16,615 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 871 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:16,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 245 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 592 Invalid, 1 Unknown, 41 Unchecked, 9.0s Time] [2022-11-20 11:11:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-20 11:11:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 469. [2022-11-20 11:11:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 467 states have (on average 1.1627408993576016) internal successors, (543), 468 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 543 transitions. [2022-11-20 11:11:16,622 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 543 transitions. Word has length 83 [2022-11-20 11:11:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:16,622 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 543 transitions. [2022-11-20 11:11:16,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:16,635 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 543 transitions. [2022-11-20 11:11:16,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 11:11:16,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:16,636 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:16,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:16,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:16,849 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:11:16,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:16,849 INFO L85 PathProgramCache]: Analyzing trace with hash 98760736, now seen corresponding path program 8 times [2022-11-20 11:11:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:16,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541887388] [2022-11-20 11:11:16,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:16,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:16,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:16,851 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:11:16,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-20 11:11:17,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:11:17,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:17,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:11:17,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:17,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:11:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 55 proven. 246 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:11:19,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 189 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:11:23,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:23,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541887388] [2022-11-20 11:11:23,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541887388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:23,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:23,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2022-11-20 11:11:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420704108] [2022-11-20 11:11:23,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:23,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:11:23,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:11:23,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:11:23,096 INFO L87 Difference]: Start difference. First operand 469 states and 543 transitions. Second operand has 29 states, 28 states have (on average 4.142857142857143) internal successors, (116), 29 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:38,164 INFO L93 Difference]: Finished difference Result 1633 states and 1916 transitions. [2022-11-20 11:11:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 11:11:38,166 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.142857142857143) internal successors, (116), 29 states have internal predecessors, (116), 0 states have call successors, (0), 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 95 [2022-11-20 11:11:38,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:38,168 INFO L225 Difference]: With dead ends: 1633 [2022-11-20 11:11:38,168 INFO L226 Difference]: Without dead ends: 1604 [2022-11-20 11:11:38,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 174 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=958, Invalid=4154, Unknown=0, NotChecked=0, Total=5112 [2022-11-20 11:11:38,169 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 532 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:38,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 586 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 901 Invalid, 0 Unknown, 166 Unchecked, 4.9s Time] [2022-11-20 11:11:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2022-11-20 11:11:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1292. [2022-11-20 11:11:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1290 states have (on average 1.207751937984496) internal successors, (1558), 1291 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1558 transitions. [2022-11-20 11:11:38,185 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1558 transitions. Word has length 95 [2022-11-20 11:11:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:38,185 INFO L495 AbstractCegarLoop]: Abstraction has 1292 states and 1558 transitions. [2022-11-20 11:11:38,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.142857142857143) internal successors, (116), 29 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1558 transitions. [2022-11-20 11:11:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 11:11:38,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:38,188 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:38,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:38,401 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:11:38,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash 464474487, now seen corresponding path program 4 times [2022-11-20 11:11:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:38,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854062976] [2022-11-20 11:11:38,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:11:38,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:38,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:38,404 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:11:38,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-20 11:11:38,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:11:38,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:38,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:11:38,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:38,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:11:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 55 proven. 246 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:11:40,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 189 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:11:44,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:44,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854062976] [2022-11-20 11:11:44,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854062976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:44,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:44,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2022-11-20 11:11:44,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673272783] [2022-11-20 11:11:44,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:44,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:11:44,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:44,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:11:44,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:11:44,722 INFO L87 Difference]: Start difference. First operand 1292 states and 1558 transitions. Second operand has 29 states, 28 states have (on average 4.642857142857143) internal successors, (130), 29 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:48,552 INFO L93 Difference]: Finished difference Result 1547 states and 1840 transitions. [2022-11-20 11:11:48,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:11:48,554 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.642857142857143) internal successors, (130), 29 states have internal predecessors, (130), 0 states have call successors, (0), 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 101 [2022-11-20 11:11:48,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:48,556 INFO L225 Difference]: With dead ends: 1547 [2022-11-20 11:11:48,556 INFO L226 Difference]: Without dead ends: 1539 [2022-11-20 11:11:48,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=516, Invalid=1934, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 11:11:48,558 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 644 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:48,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 405 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 585 Invalid, 0 Unknown, 84 Unchecked, 1.4s Time] [2022-11-20 11:11:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-11-20 11:11:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1227. [2022-11-20 11:11:48,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1225 states have (on average 1.203265306122449) internal successors, (1474), 1226 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1474 transitions. [2022-11-20 11:11:48,571 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1474 transitions. Word has length 101 [2022-11-20 11:11:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:48,571 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 1474 transitions. [2022-11-20 11:11:48,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.642857142857143) internal successors, (130), 29 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1474 transitions. [2022-11-20 11:11:48,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 11:11:48,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:48,574 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:48,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:48,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:48,788 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:11:48,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash 126493481, now seen corresponding path program 5 times [2022-11-20 11:11:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:48,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624673382] [2022-11-20 11:11:48,789 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:11:48,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:48,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:48,791 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:11:48,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-20 11:11:49,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-20 11:11:49,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:49,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:11:49,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:49,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:11:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 55 proven. 246 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:11:51,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 189 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:11:55,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:55,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624673382] [2022-11-20 11:11:55,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624673382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:55,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:55,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2022-11-20 11:11:55,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31836638] [2022-11-20 11:11:55,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:55,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:11:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:55,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:11:55,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:11:55,505 INFO L87 Difference]: Start difference. First operand 1227 states and 1474 transitions. Second operand has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:00,259 INFO L93 Difference]: Finished difference Result 1759 states and 2080 transitions. [2022-11-20 11:12:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:12:00,260 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 0 states have call successors, (0), 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 101 [2022-11-20 11:12:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:00,265 INFO L225 Difference]: With dead ends: 1759 [2022-11-20 11:12:00,265 INFO L226 Difference]: Without dead ends: 1751 [2022-11-20 11:12:00,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=572, Invalid=2290, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 11:12:00,266 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 580 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:00,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 404 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 633 Invalid, 0 Unknown, 81 Unchecked, 1.7s Time] [2022-11-20 11:12:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-11-20 11:12:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1524. [2022-11-20 11:12:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1522 states have (on average 1.2043363994743759) internal successors, (1833), 1523 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1833 transitions. [2022-11-20 11:12:00,282 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1833 transitions. Word has length 101 [2022-11-20 11:12:00,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:00,282 INFO L495 AbstractCegarLoop]: Abstraction has 1524 states and 1833 transitions. [2022-11-20 11:12:00,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:00,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1833 transitions. [2022-11-20 11:12:00,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 11:12:00,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:00,285 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:00,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:00,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:12:00,500 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:12:00,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 911855479, now seen corresponding path program 6 times [2022-11-20 11:12:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:12:00,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433452405] [2022-11-20 11:12:00,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:12:00,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:12:00,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:12:00,502 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:12:00,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-20 11:12:00,929 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-20 11:12:00,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:00,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:12:00,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:00,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:12:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 177 proven. 85 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-20 11:12:08,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 113 proven. 149 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-20 11:12:18,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:12:18,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433452405] [2022-11-20 11:12:18,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433452405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:18,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:12:18,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-20 11:12:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120971717] [2022-11-20 11:12:18,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:18,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 11:12:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:12:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 11:12:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:12:18,328 INFO L87 Difference]: Start difference. First operand 1524 states and 1833 transitions. Second operand has 27 states, 26 states have (on average 4.230769230769231) internal successors, (110), 27 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:19,280 INFO L93 Difference]: Finished difference Result 2031 states and 2446 transitions. [2022-11-20 11:12:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:12:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.230769230769231) internal successors, (110), 27 states have internal predecessors, (110), 0 states have call successors, (0), 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 101 [2022-11-20 11:12:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:19,287 INFO L225 Difference]: With dead ends: 2031 [2022-11-20 11:12:19,287 INFO L226 Difference]: Without dead ends: 2010 [2022-11-20 11:12:19,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:12:19,288 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 35 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:19,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 282 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-11-20 11:12:19,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-11-20 11:12:19,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1899. [2022-11-20 11:12:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1897 states have (on average 1.2177121771217712) internal successors, (2310), 1898 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2310 transitions. [2022-11-20 11:12:19,304 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2310 transitions. Word has length 101 [2022-11-20 11:12:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:19,304 INFO L495 AbstractCegarLoop]: Abstraction has 1899 states and 2310 transitions. [2022-11-20 11:12:19,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.230769230769231) internal successors, (110), 27 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2310 transitions. [2022-11-20 11:12:19,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 11:12:19,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:19,306 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:19,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-20 11:12:19,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:12:19,515 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:12:19,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -446943298, now seen corresponding path program 9 times [2022-11-20 11:12:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:12:19,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492540982] [2022-11-20 11:12:19,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:12:19,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:12:19,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:12:19,522 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:12:19,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-20 11:12:20,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-20 11:12:20,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:20,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 11:12:20,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:20,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:12:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 13 proven. 431 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:12:23,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 1 proven. 443 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 11:12:34,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:12:34,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492540982] [2022-11-20 11:12:34,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492540982] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:34,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:12:34,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2022-11-20 11:12:34,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613311554] [2022-11-20 11:12:34,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:34,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 11:12:34,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:12:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 11:12:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 11:12:34,067 INFO L87 Difference]: Start difference. First operand 1899 states and 2310 transitions. Second operand has 43 states, 43 states have (on average 3.7674418604651163) internal successors, (162), 43 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:01,784 INFO L93 Difference]: Finished difference Result 2362 states and 2885 transitions. [2022-11-20 11:13:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-20 11:13:01,786 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.7674418604651163) internal successors, (162), 43 states have internal predecessors, (162), 0 states have call successors, (0), 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 102 [2022-11-20 11:13:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:01,789 INFO L225 Difference]: With dead ends: 2362 [2022-11-20 11:13:01,789 INFO L226 Difference]: Without dead ends: 2358 [2022-11-20 11:13:01,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2679 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=1333, Invalid=7597, Unknown=0, NotChecked=0, Total=8930 [2022-11-20 11:13:01,790 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1062 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:01,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 778 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1316 Invalid, 0 Unknown, 172 Unchecked, 5.8s Time] [2022-11-20 11:13:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2022-11-20 11:13:01,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2238. [2022-11-20 11:13:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2236 states have (on average 1.2347942754919499) internal successors, (2761), 2237 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 2761 transitions. [2022-11-20 11:13:01,827 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 2761 transitions. Word has length 102 [2022-11-20 11:13:01,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:01,827 INFO L495 AbstractCegarLoop]: Abstraction has 2238 states and 2761 transitions. [2022-11-20 11:13:01,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.7674418604651163) internal successors, (162), 43 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 2761 transitions. [2022-11-20 11:13:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 11:13:01,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:01,830 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:01,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:02,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:02,047 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:13:02,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1114339186, now seen corresponding path program 7 times [2022-11-20 11:13:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:02,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333236501] [2022-11-20 11:13:02,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:13:02,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:02,050 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:02,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-20 11:13:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:02,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:13:02,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:02,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:13:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 55 proven. 252 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:13:04,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 112 proven. 195 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:13:08,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:08,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333236501] [2022-11-20 11:13:08,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333236501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:08,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:08,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2022-11-20 11:13:08,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916528750] [2022-11-20 11:13:08,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:08,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:13:08,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:08,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:13:08,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:13:08,912 INFO L87 Difference]: Start difference. First operand 2238 states and 2761 transitions. Second operand has 29 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:21,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:21,200 INFO L93 Difference]: Finished difference Result 3687 states and 4464 transitions. [2022-11-20 11:13:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-20 11:13:21,201 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 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 107 [2022-11-20 11:13:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:21,210 INFO L225 Difference]: With dead ends: 3687 [2022-11-20 11:13:21,211 INFO L226 Difference]: Without dead ends: 3651 [2022-11-20 11:13:21,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=974, Invalid=3996, Unknown=0, NotChecked=0, Total=4970 [2022-11-20 11:13:21,212 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 834 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:21,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 548 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 917 Invalid, 0 Unknown, 173 Unchecked, 3.9s Time] [2022-11-20 11:13:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2022-11-20 11:13:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 3183. [2022-11-20 11:13:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 3181 states have (on average 1.2291732159698208) internal successors, (3910), 3182 states have internal predecessors, (3910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 3910 transitions. [2022-11-20 11:13:21,254 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 3910 transitions. Word has length 107 [2022-11-20 11:13:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:21,255 INFO L495 AbstractCegarLoop]: Abstraction has 3183 states and 3910 transitions. [2022-11-20 11:13:21,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 3910 transitions. [2022-11-20 11:13:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 11:13:21,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:21,258 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:21,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-20 11:13:21,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:21,458 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:13:21,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:21,459 INFO L85 PathProgramCache]: Analyzing trace with hash -939684978, now seen corresponding path program 8 times [2022-11-20 11:13:21,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:21,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797714763] [2022-11-20 11:13:21,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:13:21,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:21,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:21,460 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:21,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-20 11:13:21,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:13:21,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:13:21,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:13:21,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:21,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:13:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 61 proven. 246 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:13:24,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:13:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 112 proven. 195 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:13:28,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:13:28,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797714763] [2022-11-20 11:13:28,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797714763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:13:28,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:13:28,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2022-11-20 11:13:28,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580742279] [2022-11-20 11:13:28,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:13:28,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:13:28,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:13:28,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:13:28,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:13:28,031 INFO L87 Difference]: Start difference. First operand 3183 states and 3910 transitions. Second operand has 29 states, 28 states have (on average 5.071428571428571) internal successors, (142), 29 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:32,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:32,097 INFO L93 Difference]: Finished difference Result 3658 states and 4445 transitions. [2022-11-20 11:13:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:13:32,099 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.071428571428571) internal successors, (142), 29 states have internal predecessors, (142), 0 states have call successors, (0), 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 107 [2022-11-20 11:13:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:32,116 INFO L225 Difference]: With dead ends: 3658 [2022-11-20 11:13:32,116 INFO L226 Difference]: Without dead ends: 3622 [2022-11-20 11:13:32,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=516, Invalid=1934, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 11:13:32,117 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 799 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:32,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 518 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 568 Invalid, 0 Unknown, 247 Unchecked, 1.5s Time] [2022-11-20 11:13:32,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-11-20 11:13:32,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 1759. [2022-11-20 11:13:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1757 states have (on average 1.2145702902675015) internal successors, (2134), 1758 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2134 transitions. [2022-11-20 11:13:32,149 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2134 transitions. Word has length 107 [2022-11-20 11:13:32,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:32,150 INFO L495 AbstractCegarLoop]: Abstraction has 1759 states and 2134 transitions. [2022-11-20 11:13:32,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.071428571428571) internal successors, (142), 29 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:13:32,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2134 transitions. [2022-11-20 11:13:32,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 11:13:32,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:32,151 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:13:32,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-20 11:13:32,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:13:32,355 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:13:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash 682229170, now seen corresponding path program 9 times [2022-11-20 11:13:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:13:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515268896] [2022-11-20 11:13:32,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:13:32,356 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 [2022-11-20 11:13:32,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:13:32,357 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:13:32,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_233cd6db-c01d-45c9-8d53-ab5949ad6b19/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-20 11:13:32,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 11:13:32,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:13:32,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:13:32,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:13:32,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:13:35,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:13:35,876 INFO L217 Elim1Store]: Index analysis took 187 ms [2022-11-20 11:13:35,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:13:35,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 112 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 8 case distinctions, treesize of input 177 treesize of output 131