./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --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_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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_6c399012-5064-40b1-871a-21ed416f77b0/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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- 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 11:08:01,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:08:01,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:08:01,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:08:01,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:08:01,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:08:01,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:08:01,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:08:01,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:08:01,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:08:01,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:08:01,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:08:01,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:08:01,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:08:01,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:08:01,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:08:01,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:08:01,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:08:01,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:08:01,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:08:01,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:08:01,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:08:01,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:08:01,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:08:01,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:08:01,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:08:01,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:08:01,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:08:01,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:08:01,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:08:01,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:08:01,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:08:01,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:08:01,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:08:01,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:08:01,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:08:01,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:08:01,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:08:01,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:08:01,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:08:01,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:08:01,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:08:01,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:08:01,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:08:01,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:08:01,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:08:01,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:08:01,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:08:01,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:08:01,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:08:01,917 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:08:01,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:08:01,918 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:08:01,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:08:01,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:08:01,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:08:01,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:08:01,919 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:08:01,919 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:08:01,919 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:08:01,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:08:01,920 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:08:01,920 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:08:01,920 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:08:01,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:08:01,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:08:01,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:08:01,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:08:01,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:08:01,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:08:01,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:08:01,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:08:01,923 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_6c399012-5064-40b1-871a-21ed416f77b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-11-20 11:08:02,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:08:02,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:08:02,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:08:02,238 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:08:02,239 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:08:02,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-20 11:08:05,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:08:05,559 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:08:05,559 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-20 11:08:05,570 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/data/4163a5f0e/ca2f4cb771dd4ad99558b789b4348914/FLAGce5f2ef9d [2022-11-20 11:08:05,584 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/data/4163a5f0e/ca2f4cb771dd4ad99558b789b4348914 [2022-11-20 11:08:05,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:08:05,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:08:05,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:08:05,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:08:05,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:08:05,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:05" (1/1) ... [2022-11-20 11:08:05,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13962cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:05, skipping insertion in model container [2022-11-20 11:08:05,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:05" (1/1) ... [2022-11-20 11:08:05,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:08:05,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:08:05,816 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-20 11:08:05,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:08:05,837 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 11:08:05,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e415f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:05, skipping insertion in model container [2022-11-20 11:08:05,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:08:05,838 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 11:08:05,840 INFO L158 Benchmark]: Toolchain (without parser) took 251.05ms. Allocated memory is still 174.1MB. Free memory was 131.7MB in the beginning and 121.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:08:05,840 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:08:05,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.53ms. Allocated memory is still 174.1MB. Free memory was 131.7MB in the beginning and 121.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:08:05,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.53ms. Allocated memory is still 174.1MB. Free memory was 131.7MB in the beginning and 121.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 143]: 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_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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_6c399012-5064-40b1-871a-21ed416f77b0/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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- 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 11:08:08,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:08:08,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:08:08,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:08:08,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:08:08,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:08:08,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:08:08,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:08:08,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:08:08,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:08:08,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:08:08,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:08:08,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:08:08,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:08:08,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:08:08,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:08:08,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:08:08,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:08:08,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:08:08,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:08:08,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:08:08,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:08:08,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:08:08,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:08:08,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:08:08,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:08:08,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:08:08,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:08:08,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:08:08,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:08:08,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:08:08,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:08:08,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:08:08,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:08:08,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:08:08,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:08:08,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:08:08,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:08:08,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:08:08,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:08:08,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:08:08,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:08:08,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:08:08,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:08:08,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:08:08,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:08:08,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:08:08,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:08:08,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:08:08,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:08:08,391 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:08:08,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:08:08,392 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:08:08,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:08:08,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:08:08,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:08:08,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:08:08,394 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:08:08,394 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:08:08,395 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:08:08,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:08:08,395 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:08:08,395 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:08:08,396 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:08:08,396 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:08:08,396 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:08:08,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:08:08,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:08:08,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:08:08,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:08:08,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:08:08,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:08:08,398 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:08:08,399 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:08:08,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:08:08,399 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_6c399012-5064-40b1-871a-21ed416f77b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-11-20 11:08:08,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:08:08,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:08:08,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:08:08,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:08:08,886 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:08:08,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-20 11:08:12,128 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:08:12,438 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:08:12,438 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-20 11:08:12,449 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/data/528ddb302/911e51af7e824b8fb02cf1c3c313e333/FLAG5a7725c48 [2022-11-20 11:08:12,477 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/data/528ddb302/911e51af7e824b8fb02cf1c3c313e333 [2022-11-20 11:08:12,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:08:12,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:08:12,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:08:12,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:08:12,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:08:12,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db8f0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12, skipping insertion in model container [2022-11-20 11:08:12,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:08:12,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:08:12,785 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-20 11:08:12,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:08:12,822 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:08:12,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:08:12,843 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-20 11:08:12,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:08:12,852 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:08:12,879 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-20 11:08:12,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:08:12,900 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:08:12,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12 WrapperNode [2022-11-20 11:08:12,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:08:12,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:08:12,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:08:12,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:08:12,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,947 INFO L138 Inliner]: procedures = 29, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 172 [2022-11-20 11:08:12,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:08:12,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:08:12,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:08:12,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:08:12,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,983 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:08:12,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:08:12,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:08:12,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:08:12,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (1/1) ... [2022-11-20 11:08:12,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:08:13,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:08:13,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:08:13,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:08:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:08:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:08:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:08:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:08:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:08:13,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:08:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:08:13,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:08:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:08:13,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:08:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 11:08:13,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 11:08:13,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-20 11:08:13,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-20 11:08:13,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:08:13,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:08:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:08:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:08:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:08:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:08:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:08:13,083 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:08:13,209 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:08:13,212 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:08:14,125 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:08:14,385 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:08:14,385 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 11:08:14,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:08:14 BoogieIcfgContainer [2022-11-20 11:08:14,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:08:14,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:08:14,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:08:14,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:08:14,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:08:12" (1/3) ... [2022-11-20 11:08:14,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687cb376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:08:14, skipping insertion in model container [2022-11-20 11:08:14,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:08:12" (2/3) ... [2022-11-20 11:08:14,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687cb376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:08:14, skipping insertion in model container [2022-11-20 11:08:14,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:08:14" (3/3) ... [2022-11-20 11:08:14,402 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-11-20 11:08:14,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:08:14,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2022-11-20 11:08:14,422 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:08:14,593 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-20 11:08:14,643 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 11:08:14,672 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 243 transitions, 526 flow [2022-11-20 11:08:14,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 243 transitions, 526 flow [2022-11-20 11:08:14,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 243 transitions, 526 flow [2022-11-20 11:08:14,836 INFO L130 PetriNetUnfolder]: 14/238 cut-off events. [2022-11-20 11:08:14,836 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 11:08:14,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 238 events. 14/238 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 335 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 188. Up to 2 conditions per place. [2022-11-20 11:08:14,851 INFO L119 LiptonReduction]: Number of co-enabled transitions 8466 [2022-11-20 11:09:02,284 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 135 DAG size of output: 134 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 11:09:10,580 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 141 DAG size of output: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 11:09:13,243 INFO L134 LiptonReduction]: Checked pairs total: 14484 [2022-11-20 11:09:13,243 INFO L136 LiptonReduction]: Total number of compositions: 238 [2022-11-20 11:09:13,251 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 91 transitions, 222 flow [2022-11-20 11:09:18,126 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 108458 states, 94850 states have (on average 5.793473906167633) internal successors, (549511), 108457 states have internal predecessors, (549511), 0 states have call successors, (0), 0 states 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 11:09:18,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:09:18,450 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1bdeb6d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:09:18,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2022-11-20 11:09:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 108458 states, 94850 states have (on average 5.793473906167633) internal successors, (549511), 108457 states have internal predecessors, (549511), 0 states have call successors, (0), 0 states 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 11:09:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 11:09:18,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:18,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 11:09:18,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash 32763, now seen corresponding path program 1 times [2022-11-20 11:09:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:18,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180949404] [2022-11-20 11:09:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:18,643 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 11:09:18,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:18,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:18,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:18,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:09:18,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:19,314 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-20 11:09:19,316 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-20 11:09:19,429 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 11:09:19,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:19,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:19,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180949404] [2022-11-20 11:09:19,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180949404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:19,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:19,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:09:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435267754] [2022-11-20 11:09:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:19,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:19,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:19,735 INFO L87 Difference]: Start difference. First operand has 108458 states, 94850 states have (on average 5.793473906167633) internal successors, (549511), 108457 states have internal predecessors, (549511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:20,872 INFO L93 Difference]: Finished difference Result 22626 states and 113179 transitions. [2022-11-20 11:09:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:20,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 11:09:20,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:21,247 INFO L225 Difference]: With dead ends: 22626 [2022-11-20 11:09:21,248 INFO L226 Difference]: Without dead ends: 22626 [2022-11-20 11:09:21,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:21,252 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:21,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 67 Unchecked, 0.3s Time] [2022-11-20 11:09:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22626 states. [2022-11-20 11:09:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22626 to 22626. [2022-11-20 11:09:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22626 states, 21171 states have (on average 5.345944924661093) internal successors, (113179), 22625 states have internal predecessors, (113179), 0 states have call successors, (0), 0 states 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 11:09:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22626 states to 22626 states and 113179 transitions. [2022-11-20 11:09:23,352 INFO L78 Accepts]: Start accepts. Automaton has 22626 states and 113179 transitions. Word has length 2 [2022-11-20 11:09:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:23,353 INFO L495 AbstractCegarLoop]: Abstraction has 22626 states and 113179 transitions. [2022-11-20 11:09:23,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 22626 states and 113179 transitions. [2022-11-20 11:09:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 11:09:23,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:23,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 11:09:23,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:23,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:23,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:23,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:23,577 INFO L85 PathProgramCache]: Analyzing trace with hash 32875, now seen corresponding path program 1 times [2022-11-20 11:09:23,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:23,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150463084] [2022-11-20 11:09:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:23,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:23,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:23,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:23,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:23,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:09:23,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:23,724 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 11:09:23,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:23,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:23,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150463084] [2022-11-20 11:09:23,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150463084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:23,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:23,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:09:23,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254148188] [2022-11-20 11:09:23,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:23,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:23,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:23,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:23,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:23,728 INFO L87 Difference]: Start difference. First operand 22626 states and 113179 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:24,597 INFO L93 Difference]: Finished difference Result 22627 states and 113176 transitions. [2022-11-20 11:09:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:24,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 11:09:24,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:24,797 INFO L225 Difference]: With dead ends: 22627 [2022-11-20 11:09:24,797 INFO L226 Difference]: Without dead ends: 22627 [2022-11-20 11:09:24,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:24,799 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:24,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:09:24,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22627 states. [2022-11-20 11:09:25,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22627 to 22626. [2022-11-20 11:09:26,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22626 states, 21171 states have (on average 5.345803221387747) internal successors, (113176), 22625 states have internal predecessors, (113176), 0 states have call successors, (0), 0 states 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 11:09:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22626 states to 22626 states and 113176 transitions. [2022-11-20 11:09:26,199 INFO L78 Accepts]: Start accepts. Automaton has 22626 states and 113176 transitions. Word has length 2 [2022-11-20 11:09:26,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:26,199 INFO L495 AbstractCegarLoop]: Abstraction has 22626 states and 113176 transitions. [2022-11-20 11:09:26,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 22626 states and 113176 transitions. [2022-11-20 11:09:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 11:09:26,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:26,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 11:09:26,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:26,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:26,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:26,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash 32762, now seen corresponding path program 1 times [2022-11-20 11:09:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:26,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554255403] [2022-11-20 11:09:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:26,415 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 11:09:26,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:26,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:26,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:26,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:09:26,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:26,832 INFO L321 Elim1Store]: treesize reduction 240, result has 26.4 percent of original size [2022-11-20 11:09:26,833 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 5 case distinctions, treesize of input 21 treesize of output 93 [2022-11-20 11:09:26,883 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 11:09:26,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:26,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:26,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554255403] [2022-11-20 11:09:26,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554255403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:26,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:26,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:09:26,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416515792] [2022-11-20 11:09:26,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:26,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:26,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:26,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:26,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:26,887 INFO L87 Difference]: Start difference. First operand 22626 states and 113176 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:27,755 INFO L93 Difference]: Finished difference Result 22625 states and 113174 transitions. [2022-11-20 11:09:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-20 11:09:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:27,980 INFO L225 Difference]: With dead ends: 22625 [2022-11-20 11:09:27,980 INFO L226 Difference]: Without dead ends: 22625 [2022-11-20 11:09:27,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:27,982 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:27,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 4 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:09:28,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22625 states. [2022-11-20 11:09:29,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22625 to 22625. [2022-11-20 11:09:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22625 states, 21171 states have (on average 5.34570875253885) internal successors, (113174), 22624 states have internal predecessors, (113174), 0 states have call successors, (0), 0 states 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 11:09:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22625 states to 22625 states and 113174 transitions. [2022-11-20 11:09:29,302 INFO L78 Accepts]: Start accepts. Automaton has 22625 states and 113174 transitions. Word has length 2 [2022-11-20 11:09:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:29,302 INFO L495 AbstractCegarLoop]: Abstraction has 22625 states and 113174 transitions. [2022-11-20 11:09:29,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 22625 states and 113174 transitions. [2022-11-20 11:09:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:09:29,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:29,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:09:29,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:29,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:29,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:29,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1019431, now seen corresponding path program 1 times [2022-11-20 11:09:29,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:29,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846283568] [2022-11-20 11:09:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:29,518 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 11:09:29,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:29,519 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:29,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:29,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:09:29,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:30,083 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-20 11:09:30,083 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-20 11:09:30,186 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 11:09:30,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:30,443 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 11:09:30,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:30,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846283568] [2022-11-20 11:09:30,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846283568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:30,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:30,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 11:09:30,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395457953] [2022-11-20 11:09:30,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:30,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:30,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:30,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:30,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:09:30,446 INFO L87 Difference]: Start difference. First operand 22625 states and 113174 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:32,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:32,784 INFO L93 Difference]: Finished difference Result 45249 states and 226353 transitions. [2022-11-20 11:09:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:09:32,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 11:09:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:33,264 INFO L225 Difference]: With dead ends: 45249 [2022-11-20 11:09:33,264 INFO L226 Difference]: Without dead ends: 45249 [2022-11-20 11:09:33,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:09:33,268 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 275 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:33,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 12 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:09:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45249 states. [2022-11-20 11:09:34,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45249 to 22628. [2022-11-20 11:09:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22628 states, 21174 states have (on average 5.345518088221404) internal successors, (113186), 22627 states have internal predecessors, (113186), 0 states have call successors, (0), 0 states 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 11:09:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22628 states to 22628 states and 113186 transitions. [2022-11-20 11:09:34,989 INFO L78 Accepts]: Start accepts. Automaton has 22628 states and 113186 transitions. Word has length 3 [2022-11-20 11:09:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:34,989 INFO L495 AbstractCegarLoop]: Abstraction has 22628 states and 113186 transitions. [2022-11-20 11:09:34,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 22628 states and 113186 transitions. [2022-11-20 11:09:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:09:34,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:34,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:09:34,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:35,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:35,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1019543, now seen corresponding path program 1 times [2022-11-20 11:09:35,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444689360] [2022-11-20 11:09:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:35,192 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 11:09:35,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:35,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:35,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:35,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:09:35,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:35,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:35,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:35,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:35,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:35,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:35,744 INFO L321 Elim1Store]: treesize reduction 131, result has 30.7 percent of original size [2022-11-20 11:09:35,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 65 [2022-11-20 11:09:35,817 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-20 11:09:35,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 88 [2022-11-20 11:09:35,995 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 11:09:35,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:35,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:35,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444689360] [2022-11-20 11:09:35,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444689360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:35,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:35,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:09:35,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360045387] [2022-11-20 11:09:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:35,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:35,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:35,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:35,997 INFO L87 Difference]: Start difference. First operand 22628 states and 113186 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:36,402 INFO L93 Difference]: Finished difference Result 22627 states and 113182 transitions. [2022-11-20 11:09:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:36,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 11:09:36,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:36,552 INFO L225 Difference]: With dead ends: 22627 [2022-11-20 11:09:36,552 INFO L226 Difference]: Without dead ends: 22627 [2022-11-20 11:09:36,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:36,553 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:36,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2022-11-20 11:09:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22627 states. [2022-11-20 11:09:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22627 to 22627. [2022-11-20 11:09:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22627 states, 21174 states have (on average 5.345329177292906) internal successors, (113182), 22626 states have internal predecessors, (113182), 0 states have call successors, (0), 0 states 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 11:09:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22627 states to 22627 states and 113182 transitions. [2022-11-20 11:09:37,855 INFO L78 Accepts]: Start accepts. Automaton has 22627 states and 113182 transitions. Word has length 3 [2022-11-20 11:09:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:37,855 INFO L495 AbstractCegarLoop]: Abstraction has 22627 states and 113182 transitions. [2022-11-20 11:09:37,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:37,856 INFO L276 IsEmpty]: Start isEmpty. Operand 22627 states and 113182 transitions. [2022-11-20 11:09:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:09:37,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:37,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:09:37,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:38,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:38,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:38,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:38,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1019544, now seen corresponding path program 1 times [2022-11-20 11:09:38,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:38,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491482801] [2022-11-20 11:09:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:38,058 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 11:09:38,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:38,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:38,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:38,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:09:38,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:38,411 INFO L321 Elim1Store]: treesize reduction 346, result has 10.4 percent of original size [2022-11-20 11:09:38,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 99 [2022-11-20 11:09:38,578 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 11:09:38,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:38,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:38,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491482801] [2022-11-20 11:09:38,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491482801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:38,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:38,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:09:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50039748] [2022-11-20 11:09:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:38,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:38,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:38,580 INFO L87 Difference]: Start difference. First operand 22627 states and 113182 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:39,438 INFO L93 Difference]: Finished difference Result 22626 states and 113178 transitions. [2022-11-20 11:09:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:39,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 11:09:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:39,579 INFO L225 Difference]: With dead ends: 22626 [2022-11-20 11:09:39,580 INFO L226 Difference]: Without dead ends: 22626 [2022-11-20 11:09:39,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:39,581 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:39,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 64 Unchecked, 0.2s Time] [2022-11-20 11:09:39,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22626 states. [2022-11-20 11:09:40,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22626 to 22626. [2022-11-20 11:09:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22626 states, 21174 states have (on average 5.345140266364409) internal successors, (113178), 22625 states have internal predecessors, (113178), 0 states have call successors, (0), 0 states 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 11:09:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22626 states to 22626 states and 113178 transitions. [2022-11-20 11:09:40,513 INFO L78 Accepts]: Start accepts. Automaton has 22626 states and 113178 transitions. Word has length 3 [2022-11-20 11:09:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:40,514 INFO L495 AbstractCegarLoop]: Abstraction has 22626 states and 113178 transitions. [2022-11-20 11:09:40,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 22626 states and 113178 transitions. [2022-11-20 11:09:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:09:40,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:40,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:09:40,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:40,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:40,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash 979803694, now seen corresponding path program 1 times [2022-11-20 11:09:40,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:40,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675332068] [2022-11-20 11:09:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:40,722 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 11:09:40,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:40,725 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:40,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:40,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:09:40,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:41,110 INFO L321 Elim1Store]: treesize reduction 240, result has 26.4 percent of original size [2022-11-20 11:09:41,111 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 5 case distinctions, treesize of input 21 treesize of output 93 [2022-11-20 11:09:41,173 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 11:09:41,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:41,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:41,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675332068] [2022-11-20 11:09:41,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675332068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:41,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:41,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:09:41,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802317076] [2022-11-20 11:09:41,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:41,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:09:41,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:09:41,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:09:41,175 INFO L87 Difference]: Start difference. First operand 22626 states and 113178 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:41,965 INFO L93 Difference]: Finished difference Result 8602 states and 42506 transitions. [2022-11-20 11:09:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:09:41,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 11:09:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:42,018 INFO L225 Difference]: With dead ends: 8602 [2022-11-20 11:09:42,018 INFO L226 Difference]: Without dead ends: 8602 [2022-11-20 11:09:42,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:09:42,019 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:42,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 2 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:09:42,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8602 states. [2022-11-20 11:09:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8602 to 8602. [2022-11-20 11:09:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8602 states, 8323 states have (on average 5.107052745404301) internal successors, (42506), 8601 states have internal predecessors, (42506), 0 states have call successors, (0), 0 states 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 11:09:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8602 states to 8602 states and 42506 transitions. [2022-11-20 11:09:42,302 INFO L78 Accepts]: Start accepts. Automaton has 8602 states and 42506 transitions. Word has length 5 [2022-11-20 11:09:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:42,303 INFO L495 AbstractCegarLoop]: Abstraction has 8602 states and 42506 transitions. [2022-11-20 11:09:42,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 8602 states and 42506 transitions. [2022-11-20 11:09:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:09:42,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:42,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:09:42,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:42,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:42,504 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash 979803695, now seen corresponding path program 1 times [2022-11-20 11:09:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:42,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659531896] [2022-11-20 11:09:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:42,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:42,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:42,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:42,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:42,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:09:42,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:42,676 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 11:09:42,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:42,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-11-20 11:09:42,867 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 11:09:42,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:42,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659531896] [2022-11-20 11:09:42,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659531896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:42,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:42,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:09:42,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142724629] [2022-11-20 11:09:42,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:42,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:09:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:42,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:09:42,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:09:42,869 INFO L87 Difference]: Start difference. First operand 8602 states and 42506 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:43,844 INFO L93 Difference]: Finished difference Result 12269 states and 60337 transitions. [2022-11-20 11:09:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:09:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 11:09:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:43,900 INFO L225 Difference]: With dead ends: 12269 [2022-11-20 11:09:43,900 INFO L226 Difference]: Without dead ends: 12269 [2022-11-20 11:09:43,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:09:43,901 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 519 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:43,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 6 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:09:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12269 states. [2022-11-20 11:09:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12269 to 6138. [2022-11-20 11:09:44,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 5999 states have (on average 5.029838306384398) internal successors, (30174), 6137 states have internal predecessors, (30174), 0 states have call successors, (0), 0 states 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 11:09:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 30174 transitions. [2022-11-20 11:09:44,125 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 30174 transitions. Word has length 5 [2022-11-20 11:09:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:44,125 INFO L495 AbstractCegarLoop]: Abstraction has 6138 states and 30174 transitions. [2022-11-20 11:09:44,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 30174 transitions. [2022-11-20 11:09:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:09:44,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:44,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:09:44,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:44,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:44,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:44,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash 979803957, now seen corresponding path program 1 times [2022-11-20 11:09:44,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:44,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402898036] [2022-11-20 11:09:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:44,328 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 11:09:44,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:44,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:44,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:44,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:09:44,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:44,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:44,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:44,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:44,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:44,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:44,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:44,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:44,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:44,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:44,890 INFO L321 Elim1Store]: treesize reduction 73, result has 40.2 percent of original size [2022-11-20 11:09:44,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 56 [2022-11-20 11:09:44,949 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 11:09:44,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 11:09:45,743 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 11:09:45,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:46,029 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 11:09:46,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:46,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402898036] [2022-11-20 11:09:46,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402898036] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:46,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:46,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:09:46,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916011019] [2022-11-20 11:09:46,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:46,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:09:46,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:46,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:09:46,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:09:46,031 INFO L87 Difference]: Start difference. First operand 6138 states and 30174 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:46,837 INFO L93 Difference]: Finished difference Result 6142 states and 30182 transitions. [2022-11-20 11:09:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:09:46,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 11:09:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:46,861 INFO L225 Difference]: With dead ends: 6142 [2022-11-20 11:09:46,861 INFO L226 Difference]: Without dead ends: 6142 [2022-11-20 11:09:46,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:09:46,862 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 56 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:46,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 16 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 127 Unchecked, 0.8s Time] [2022-11-20 11:09:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2022-11-20 11:09:46,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 6140. [2022-11-20 11:09:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6140 states, 6001 states have (on average 5.02882852857857) internal successors, (30178), 6139 states have internal predecessors, (30178), 0 states have call successors, (0), 0 states 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 11:09:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 30178 transitions. [2022-11-20 11:09:47,016 INFO L78 Accepts]: Start accepts. Automaton has 6140 states and 30178 transitions. Word has length 5 [2022-11-20 11:09:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:47,017 INFO L495 AbstractCegarLoop]: Abstraction has 6140 states and 30178 transitions. [2022-11-20 11:09:47,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states and 30178 transitions. [2022-11-20 11:09:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:09:47,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:47,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:09:47,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:47,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:47,218 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:47,219 INFO L85 PathProgramCache]: Analyzing trace with hash 979803959, now seen corresponding path program 1 times [2022-11-20 11:09:47,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:47,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823256120] [2022-11-20 11:09:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:47,219 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 11:09:47,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:47,220 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:47,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:47,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:09:47,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:47,603 INFO L321 Elim1Store]: treesize reduction 320, result has 10.1 percent of original size [2022-11-20 11:09:47,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 88 [2022-11-20 11:09:48,068 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 11:09:48,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:48,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:48,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823256120] [2022-11-20 11:09:48,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823256120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:48,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:48,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:09:48,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829331703] [2022-11-20 11:09:48,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:48,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:48,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:48,070 INFO L87 Difference]: Start difference. First operand 6140 states and 30178 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:48,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:48,361 INFO L93 Difference]: Finished difference Result 6139 states and 30175 transitions. [2022-11-20 11:09:48,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 11:09:48,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:48,395 INFO L225 Difference]: With dead ends: 6139 [2022-11-20 11:09:48,396 INFO L226 Difference]: Without dead ends: 6139 [2022-11-20 11:09:48,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:48,396 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:48,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 59 Unchecked, 0.2s Time] [2022-11-20 11:09:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2022-11-20 11:09:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 6139. [2022-11-20 11:09:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6139 states, 6000 states have (on average 5.029166666666667) internal successors, (30175), 6138 states have internal predecessors, (30175), 0 states have call successors, (0), 0 states 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 11:09:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 30175 transitions. [2022-11-20 11:09:48,582 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 30175 transitions. Word has length 5 [2022-11-20 11:09:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:48,582 INFO L495 AbstractCegarLoop]: Abstraction has 6139 states and 30175 transitions. [2022-11-20 11:09:48,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 30175 transitions. [2022-11-20 11:09:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:09:48,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:48,583 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-20 11:09:48,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:48,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:48,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:09:48,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash 308849403, now seen corresponding path program 2 times [2022-11-20 11:09:48,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:48,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379069494] [2022-11-20 11:09:48,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:09:48,785 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 11:09:48,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:48,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:48,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:09:48,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:09:48,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:48,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:09:48,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:49,261 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-20 11:09:49,262 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-20 11:09:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:49,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:50,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:50,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379069494] [2022-11-20 11:09:50,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379069494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:50,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:50,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 11:09:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013859185] [2022-11-20 11:09:50,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:09:50,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:09:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:09:50,236 INFO L87 Difference]: Start difference. First operand 6139 states and 30175 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:58,860 INFO L93 Difference]: Finished difference Result 55181 states and 271468 transitions. [2022-11-20 11:09:58,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:09:58,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:09:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:59,162 INFO L225 Difference]: With dead ends: 55181 [2022-11-20 11:09:59,162 INFO L226 Difference]: Without dead ends: 55181 [2022-11-20 11:09:59,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:09:59,163 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1392 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:59,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 48 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-20 11:09:59,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55181 states. [2022-11-20 11:10:00,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55181 to 6145. [2022-11-20 11:10:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 6006 states have (on average 5.0261405261405265) internal successors, (30187), 6144 states have internal predecessors, (30187), 0 states have call successors, (0), 0 states 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 11:10:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 30187 transitions. [2022-11-20 11:10:00,162 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 30187 transitions. Word has length 6 [2022-11-20 11:10:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:00,162 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 30187 transitions. [2022-11-20 11:10:00,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 30187 transitions. [2022-11-20 11:10:00,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:10:00,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:00,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:10:00,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:00,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:00,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:00,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash 309144442, now seen corresponding path program 1 times [2022-11-20 11:10:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:00,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225490504] [2022-11-20 11:10:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:00,365 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 11:10:00,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:00,365 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:00,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:00,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:10:00,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:00,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:00,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:00,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:00,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:00,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:00,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:00,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:00,932 INFO L321 Elim1Store]: treesize reduction 86, result has 37.7 percent of original size [2022-11-20 11:10:00,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 59 [2022-11-20 11:10:01,006 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-20 11:10:01,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 249 treesize of output 246 [2022-11-20 11:10:01,416 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 11:10:01,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:01,694 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 11:10:01,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:01,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225490504] [2022-11-20 11:10:01,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225490504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:01,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:01,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:10:01,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096177311] [2022-11-20 11:10:01,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:01,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:01,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:01,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:01,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:01,696 INFO L87 Difference]: Start difference. First operand 6145 states and 30187 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:02,499 INFO L93 Difference]: Finished difference Result 11958 states and 58914 transitions. [2022-11-20 11:10:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:10:02,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:10:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:02,552 INFO L225 Difference]: With dead ends: 11958 [2022-11-20 11:10:02,552 INFO L226 Difference]: Without dead ends: 11958 [2022-11-20 11:10:02,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:10:02,553 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 167 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:02,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 8 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 110 Unchecked, 0.7s Time] [2022-11-20 11:10:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11958 states. [2022-11-20 11:10:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11958 to 5989. [2022-11-20 11:10:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5989 states, 5858 states have (on average 5.032263571184704) internal successors, (29479), 5988 states have internal predecessors, (29479), 0 states have call successors, (0), 0 states 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 11:10:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5989 states to 5989 states and 29479 transitions. [2022-11-20 11:10:03,030 INFO L78 Accepts]: Start accepts. Automaton has 5989 states and 29479 transitions. Word has length 6 [2022-11-20 11:10:03,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:03,030 INFO L495 AbstractCegarLoop]: Abstraction has 5989 states and 29479 transitions. [2022-11-20 11:10:03,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5989 states and 29479 transitions. [2022-11-20 11:10:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:10:03,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:03,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:10:03,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:03,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:03,247 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:03,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash 309144444, now seen corresponding path program 1 times [2022-11-20 11:10:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:03,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484615670] [2022-11-20 11:10:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:03,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:03,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:03,249 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:03,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:03,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:10:03,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:03,612 INFO L321 Elim1Store]: treesize reduction 316, result has 11.2 percent of original size [2022-11-20 11:10:03,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 92 [2022-11-20 11:10:03,889 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 11:10:03,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:03,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:03,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484615670] [2022-11-20 11:10:03,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484615670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:03,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:03,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457451364] [2022-11-20 11:10:03,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:03,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:03,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:03,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:03,891 INFO L87 Difference]: Start difference. First operand 5989 states and 29479 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11:10:04,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:04,155 INFO L93 Difference]: Finished difference Result 5988 states and 29476 transitions. [2022-11-20 11:10:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:04,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11:10:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:04,179 INFO L225 Difference]: With dead ends: 5988 [2022-11-20 11:10:04,179 INFO L226 Difference]: Without dead ends: 5988 [2022-11-20 11:10:04,179 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 11:10:04,179 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:04,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:04,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5988 states. [2022-11-20 11:10:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5988 to 5988. [2022-11-20 11:10:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 5857 states have (on average 5.032610551476865) internal successors, (29476), 5987 states have internal predecessors, (29476), 0 states have call successors, (0), 0 states 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 11:10:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 29476 transitions. [2022-11-20 11:10:04,351 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 29476 transitions. Word has length 6 [2022-11-20 11:10:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:04,352 INFO L495 AbstractCegarLoop]: Abstraction has 5988 states and 29476 transitions. [2022-11-20 11:10:04,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11:10:04,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 29476 transitions. [2022-11-20 11:10:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:10:04,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:04,353 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-20 11:10:04,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:10:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:04,565 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:04,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash 984410549, now seen corresponding path program 2 times [2022-11-20 11:10:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:04,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759038039] [2022-11-20 11:10:04,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:10:04,566 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 11:10:04,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:04,567 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:04,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:04,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:10:04,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:04,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:10:04,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:04,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:04,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:04,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:04,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:04,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:04,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:04,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:04,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:05,083 INFO L321 Elim1Store]: treesize reduction 86, result has 37.7 percent of original size [2022-11-20 11:10:05,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 59 [2022-11-20 11:10:05,162 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-20 11:10:05,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 297 treesize of output 294 [2022-11-20 11:10:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:10:05,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:05,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:05,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759038039] [2022-11-20 11:10:05,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759038039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:05,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:05,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476674080] [2022-11-20 11:10:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:05,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:05,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:05,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:05,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:05,394 INFO L87 Difference]: Start difference. First operand 5988 states and 29476 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:05,632 INFO L93 Difference]: Finished difference Result 5987 states and 29474 transitions. [2022-11-20 11:10:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 11:10:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:05,656 INFO L225 Difference]: With dead ends: 5987 [2022-11-20 11:10:05,656 INFO L226 Difference]: Without dead ends: 5987 [2022-11-20 11:10:05,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:05,657 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:05,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5987 states. [2022-11-20 11:10:05,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5987 to 5987. [2022-11-20 11:10:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5987 states, 5856 states have (on average 5.033128415300546) internal successors, (29474), 5986 states have internal predecessors, (29474), 0 states have call successors, (0), 0 states 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 11:10:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5987 states to 5987 states and 29474 transitions. [2022-11-20 11:10:05,874 INFO L78 Accepts]: Start accepts. Automaton has 5987 states and 29474 transitions. Word has length 7 [2022-11-20 11:10:05,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:05,874 INFO L495 AbstractCegarLoop]: Abstraction has 5987 states and 29474 transitions. [2022-11-20 11:10:05,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:05,875 INFO L276 IsEmpty]: Start isEmpty. Operand 5987 states and 29474 transitions. [2022-11-20 11:10:05,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:10:05,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:05,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:05,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:06,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:06,087 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash 993540414, now seen corresponding path program 1 times [2022-11-20 11:10:06,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:06,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469939466] [2022-11-20 11:10:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:06,088 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 11:10:06,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:06,089 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:06,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:06,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:10:06,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:06,308 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 11:10:06,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:06,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:06,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469939466] [2022-11-20 11:10:06,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469939466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:06,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:06,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:10:06,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554219891] [2022-11-20 11:10:06,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:06,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:10:06,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:06,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:10:06,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:10:06,310 INFO L87 Difference]: Start difference. First operand 5987 states and 29474 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:07,272 INFO L93 Difference]: Finished difference Result 8959 states and 43856 transitions. [2022-11-20 11:10:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:10:07,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 11:10:07,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:07,310 INFO L225 Difference]: With dead ends: 8959 [2022-11-20 11:10:07,310 INFO L226 Difference]: Without dead ends: 8959 [2022-11-20 11:10:07,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 11:10:07,311 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 227 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:07,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 10 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:10:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8959 states. [2022-11-20 11:10:07,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8959 to 7052. [2022-11-20 11:10:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7052 states, 6921 states have (on average 5.185666811154458) internal successors, (35890), 7051 states have internal predecessors, (35890), 0 states have call successors, (0), 0 states 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 11:10:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7052 states to 7052 states and 35890 transitions. [2022-11-20 11:10:07,568 INFO L78 Accepts]: Start accepts. Automaton has 7052 states and 35890 transitions. Word has length 7 [2022-11-20 11:10:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:07,568 INFO L495 AbstractCegarLoop]: Abstraction has 7052 states and 35890 transitions. [2022-11-20 11:10:07,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 7052 states and 35890 transitions. [2022-11-20 11:10:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:10:07,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:07,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:07,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:07,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:07,770 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:07,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash 993540547, now seen corresponding path program 1 times [2022-11-20 11:10:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:07,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459138922] [2022-11-20 11:10:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:07,771 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 11:10:07,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:07,772 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:07,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:07,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:10:07,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:08,137 INFO L321 Elim1Store]: treesize reduction 320, result has 10.1 percent of original size [2022-11-20 11:10:08,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 88 [2022-11-20 11:10:08,772 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 11:10:08,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:08,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:08,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459138922] [2022-11-20 11:10:08,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459138922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:08,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:08,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:08,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280048063] [2022-11-20 11:10:08,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:08,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:08,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:08,774 INFO L87 Difference]: Start difference. First operand 7052 states and 35890 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:08,997 INFO L93 Difference]: Finished difference Result 7051 states and 35886 transitions. [2022-11-20 11:10:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 11:10:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:09,027 INFO L225 Difference]: With dead ends: 7051 [2022-11-20 11:10:09,027 INFO L226 Difference]: Without dead ends: 7051 [2022-11-20 11:10:09,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:09,028 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:09,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:09,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7051 states. [2022-11-20 11:10:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7051 to 7051. [2022-11-20 11:10:09,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 6920 states have (on average 5.185838150289017) internal successors, (35886), 7050 states have internal predecessors, (35886), 0 states have call successors, (0), 0 states 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 11:10:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 35886 transitions. [2022-11-20 11:10:09,209 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 35886 transitions. Word has length 7 [2022-11-20 11:10:09,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:09,209 INFO L495 AbstractCegarLoop]: Abstraction has 7051 states and 35886 transitions. [2022-11-20 11:10:09,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 35886 transitions. [2022-11-20 11:10:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:10:09,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:09,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:09,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:09,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:09,410 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:09,411 INFO L85 PathProgramCache]: Analyzing trace with hash 993790108, now seen corresponding path program 1 times [2022-11-20 11:10:09,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:09,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449069048] [2022-11-20 11:10:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:09,412 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 11:10:09,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:09,413 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:09,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:09,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:10:09,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:09,744 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:10:09,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-20 11:10:10,344 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 11:10:10,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:10,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:10,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449069048] [2022-11-20 11:10:10,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449069048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:10,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:10,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:10,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631687308] [2022-11-20 11:10:10,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:10,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:10,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:10,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:10,347 INFO L87 Difference]: Start difference. First operand 7051 states and 35886 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:10,649 INFO L93 Difference]: Finished difference Result 7050 states and 35883 transitions. [2022-11-20 11:10:10,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:10,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 11:10:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:10,683 INFO L225 Difference]: With dead ends: 7050 [2022-11-20 11:10:10,684 INFO L226 Difference]: Without dead ends: 7050 [2022-11-20 11:10:10,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:10,685 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:10,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7050 states. [2022-11-20 11:10:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7050 to 7050. [2022-11-20 11:10:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7050 states, 6919 states have (on average 5.18615406850701) internal successors, (35883), 7049 states have internal predecessors, (35883), 0 states have call successors, (0), 0 states 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 11:10:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 35883 transitions. [2022-11-20 11:10:10,874 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 35883 transitions. Word has length 7 [2022-11-20 11:10:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:10,874 INFO L495 AbstractCegarLoop]: Abstraction has 7050 states and 35883 transitions. [2022-11-20 11:10:10,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 35883 transitions. [2022-11-20 11:10:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:10:10,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:10,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:10,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:11,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:11,076 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash 993790109, now seen corresponding path program 1 times [2022-11-20 11:10:11,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:11,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675782677] [2022-11-20 11:10:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:11,078 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 11:10:11,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:11,089 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:11,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:10:11,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:11,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:11,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:11,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:11,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:11,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:11,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:11,695 INFO L321 Elim1Store]: treesize reduction 115, result has 33.5 percent of original size [2022-11-20 11:10:11,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 65 [2022-11-20 11:10:11,772 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-20 11:10:11,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 149 [2022-11-20 11:10:12,641 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 11:10:12,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:13,022 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 11:10:13,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:13,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675782677] [2022-11-20 11:10:13,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675782677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:13,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:13,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:10:13,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331599710] [2022-11-20 11:10:13,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:13,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:13,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:13,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:13,025 INFO L87 Difference]: Start difference. First operand 7050 states and 35883 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:13,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:13,816 INFO L93 Difference]: Finished difference Result 7056 states and 35896 transitions. [2022-11-20 11:10:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:10:13,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 11:10:13,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:13,850 INFO L225 Difference]: With dead ends: 7056 [2022-11-20 11:10:13,850 INFO L226 Difference]: Without dead ends: 7056 [2022-11-20 11:10:13,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:13,851 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 38 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:13,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 14 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 65 Unchecked, 0.7s Time] [2022-11-20 11:10:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7056 states. [2022-11-20 11:10:14,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7056 to 7052. [2022-11-20 11:10:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7052 states, 6921 states have (on average 5.185377835572894) internal successors, (35888), 7051 states have internal predecessors, (35888), 0 states have call successors, (0), 0 states 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 11:10:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7052 states to 7052 states and 35888 transitions. [2022-11-20 11:10:14,051 INFO L78 Accepts]: Start accepts. Automaton has 7052 states and 35888 transitions. Word has length 7 [2022-11-20 11:10:14,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:14,052 INFO L495 AbstractCegarLoop]: Abstraction has 7052 states and 35888 transitions. [2022-11-20 11:10:14,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:14,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7052 states and 35888 transitions. [2022-11-20 11:10:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:10:14,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:14,053 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-20 11:10:14,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:14,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:14,258 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:14,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:14,259 INFO L85 PathProgramCache]: Analyzing trace with hash 451948794, now seen corresponding path program 2 times [2022-11-20 11:10:14,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:14,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232804332] [2022-11-20 11:10:14,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:10:14,259 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 11:10:14,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:14,260 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:14,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:14,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:10:14,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:14,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 11:10:14,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:14,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:14,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:14,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:14,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:14,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:14,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:14,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:14,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:14,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:14,910 INFO L321 Elim1Store]: treesize reduction 73, result has 40.2 percent of original size [2022-11-20 11:10:14,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 56 [2022-11-20 11:10:14,985 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 11:10:14,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 46 [2022-11-20 11:10:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:10:15,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:15,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:15,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232804332] [2022-11-20 11:10:15,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232804332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:15,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:15,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:10:15,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118337459] [2022-11-20 11:10:15,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:15,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:10:15,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:10:15,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:10:15,242 INFO L87 Difference]: Start difference. First operand 7052 states and 35888 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:15,519 INFO L93 Difference]: Finished difference Result 7051 states and 35886 transitions. [2022-11-20 11:10:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:10:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:10:15,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:15,552 INFO L225 Difference]: With dead ends: 7051 [2022-11-20 11:10:15,552 INFO L226 Difference]: Without dead ends: 7051 [2022-11-20 11:10:15,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:10:15,553 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:15,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-20 11:10:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7051 states. [2022-11-20 11:10:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7051 to 7051. [2022-11-20 11:10:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 6920 states have (on average 5.185838150289017) internal successors, (35886), 7050 states have internal predecessors, (35886), 0 states have call successors, (0), 0 states 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 11:10:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 35886 transitions. [2022-11-20 11:10:15,767 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 35886 transitions. Word has length 8 [2022-11-20 11:10:15,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:15,767 INFO L495 AbstractCegarLoop]: Abstraction has 7051 states and 35886 transitions. [2022-11-20 11:10:15,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 35886 transitions. [2022-11-20 11:10:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:10:15,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:15,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:15,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:15,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:15,970 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:15,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash 734987343, now seen corresponding path program 1 times [2022-11-20 11:10:15,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:15,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098378826] [2022-11-20 11:10:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:15,972 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 11:10:15,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:15,973 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:15,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:16,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:10:16,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:16,522 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-20 11:10:16,523 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-20 11:10:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:10:16,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:10:17,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:17,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098378826] [2022-11-20 11:10:17,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098378826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:17,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:17,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 11:10:17,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859124755] [2022-11-20 11:10:17,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:17,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:10:17,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:17,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:10:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:10:17,241 INFO L87 Difference]: Start difference. First operand 7051 states and 35886 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:20,105 INFO L93 Difference]: Finished difference Result 11961 states and 61058 transitions. [2022-11-20 11:10:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:10:20,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:10:20,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:20,164 INFO L225 Difference]: With dead ends: 11961 [2022-11-20 11:10:20,164 INFO L226 Difference]: Without dead ends: 11961 [2022-11-20 11:10:20,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:10:20,165 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 521 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:20,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 16 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 11:10:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11961 states. [2022-11-20 11:10:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11961 to 10246. [2022-11-20 11:10:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10246 states, 10115 states have (on average 5.3455264458724665) internal successors, (54070), 10245 states have internal predecessors, (54070), 0 states have call successors, (0), 0 states 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 11:10:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 54070 transitions. [2022-11-20 11:10:20,645 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 54070 transitions. Word has length 8 [2022-11-20 11:10:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:20,645 INFO L495 AbstractCegarLoop]: Abstraction has 10246 states and 54070 transitions. [2022-11-20 11:10:20,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 54070 transitions. [2022-11-20 11:10:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:10:20,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:20,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:20,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:10:20,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:20,858 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash 734987476, now seen corresponding path program 1 times [2022-11-20 11:10:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:20,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922899509] [2022-11-20 11:10:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:20,859 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 11:10:20,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:20,860 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:20,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:21,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:10:21,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:21,267 INFO L321 Elim1Store]: treesize reduction 316, result has 11.2 percent of original size [2022-11-20 11:10:21,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 92 [2022-11-20 11:10:21,666 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 11:10:21,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:21,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:21,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922899509] [2022-11-20 11:10:21,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922899509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:21,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:21,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:21,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302051976] [2022-11-20 11:10:21,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:21,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:21,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:21,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:21,668 INFO L87 Difference]: Start difference. First operand 10246 states and 54070 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:21,988 INFO L93 Difference]: Finished difference Result 10242 states and 54053 transitions. [2022-11-20 11:10:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:21,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:10:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:22,038 INFO L225 Difference]: With dead ends: 10242 [2022-11-20 11:10:22,038 INFO L226 Difference]: Without dead ends: 10242 [2022-11-20 11:10:22,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 11:10:22,039 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:22,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:22,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states. [2022-11-20 11:10:22,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10242. [2022-11-20 11:10:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10242 states, 10111 states have (on average 5.34595984571259) internal successors, (54053), 10241 states have internal predecessors, (54053), 0 states have call successors, (0), 0 states 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 11:10:22,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 54053 transitions. [2022-11-20 11:10:22,332 INFO L78 Accepts]: Start accepts. Automaton has 10242 states and 54053 transitions. Word has length 8 [2022-11-20 11:10:22,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:22,333 INFO L495 AbstractCegarLoop]: Abstraction has 10242 states and 54053 transitions. [2022-11-20 11:10:22,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 10242 states and 54053 transitions. [2022-11-20 11:10:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:10:22,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:22,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:22,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:22,534 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:22,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash 735090593, now seen corresponding path program 1 times [2022-11-20 11:10:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:22,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897930722] [2022-11-20 11:10:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:22,535 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 11:10:22,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:22,536 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:22,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:22,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:10:22,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:22,903 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:10:22,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-20 11:10:23,600 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 11:10:23,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:23,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:23,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897930722] [2022-11-20 11:10:23,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897930722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:23,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:23,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595953494] [2022-11-20 11:10:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:23,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:23,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:23,602 INFO L87 Difference]: Start difference. First operand 10242 states and 54053 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:23,890 INFO L93 Difference]: Finished difference Result 10241 states and 54050 transitions. [2022-11-20 11:10:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:23,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:10:23,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:23,942 INFO L225 Difference]: With dead ends: 10241 [2022-11-20 11:10:23,942 INFO L226 Difference]: Without dead ends: 10241 [2022-11-20 11:10:23,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 11:10:23,943 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:23,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:23,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10241 states. [2022-11-20 11:10:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10241 to 10241. [2022-11-20 11:10:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10241 states, 10110 states have (on average 5.346191889218596) internal successors, (54050), 10240 states have internal predecessors, (54050), 0 states have call successors, (0), 0 states 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 11:10:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10241 states to 10241 states and 54050 transitions. [2022-11-20 11:10:24,223 INFO L78 Accepts]: Start accepts. Automaton has 10241 states and 54050 transitions. Word has length 8 [2022-11-20 11:10:24,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:24,223 INFO L495 AbstractCegarLoop]: Abstraction has 10241 states and 54050 transitions. [2022-11-20 11:10:24,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:24,223 INFO L276 IsEmpty]: Start isEmpty. Operand 10241 states and 54050 transitions. [2022-11-20 11:10:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:10:24,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:24,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:24,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:24,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:24,424 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:24,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash 735090594, now seen corresponding path program 1 times [2022-11-20 11:10:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:24,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276773755] [2022-11-20 11:10:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:24,425 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 11:10:24,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:24,426 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:24,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:24,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 11:10:24,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:24,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:24,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:24,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:24,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:24,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:24,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:24,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:24,998 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:10:24,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:10:25,042 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:10:25,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:10:25,736 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 11:10:25,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:26,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:26,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276773755] [2022-11-20 11:10:26,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276773755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:26,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:26,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:10:26,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672422454] [2022-11-20 11:10:26,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:26,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:26,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:26,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:26,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:26,081 INFO L87 Difference]: Start difference. First operand 10241 states and 54050 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 11:10:26,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:26,875 INFO L93 Difference]: Finished difference Result 10250 states and 54070 transitions. [2022-11-20 11:10:26,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:10:26,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:10:26,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:26,923 INFO L225 Difference]: With dead ends: 10250 [2022-11-20 11:10:26,923 INFO L226 Difference]: Without dead ends: 10250 [2022-11-20 11:10:26,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:26,924 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 57 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:26,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 18 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 141 Unchecked, 0.7s Time] [2022-11-20 11:10:26,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10250 states. [2022-11-20 11:10:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10250 to 10243. [2022-11-20 11:10:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10243 states, 10112 states have (on average 5.345628955696203) internal successors, (54055), 10242 states have internal predecessors, (54055), 0 states have call successors, (0), 0 states 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 11:10:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 54055 transitions. [2022-11-20 11:10:27,314 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 54055 transitions. Word has length 8 [2022-11-20 11:10:27,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:27,314 INFO L495 AbstractCegarLoop]: Abstraction has 10243 states and 54055 transitions. [2022-11-20 11:10:27,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 11:10:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 54055 transitions. [2022-11-20 11:10:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:10:27,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:27,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:27,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:27,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:27,520 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:27,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash 742715291, now seen corresponding path program 1 times [2022-11-20 11:10:27,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:27,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506857944] [2022-11-20 11:10:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:27,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:27,523 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:27,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:27,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:10:27,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:27,931 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:10:27,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-20 11:10:28,491 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 11:10:28,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:28,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:28,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506857944] [2022-11-20 11:10:28,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506857944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:28,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:28,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:28,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239377642] [2022-11-20 11:10:28,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:28,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:28,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:28,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:28,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:28,493 INFO L87 Difference]: Start difference. First operand 10243 states and 54055 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:28,755 INFO L93 Difference]: Finished difference Result 10242 states and 54052 transitions. [2022-11-20 11:10:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:28,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:10:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:28,804 INFO L225 Difference]: With dead ends: 10242 [2022-11-20 11:10:28,804 INFO L226 Difference]: Without dead ends: 10242 [2022-11-20 11:10:28,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 11:10:28,804 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:28,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states. [2022-11-20 11:10:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10242. [2022-11-20 11:10:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10242 states, 10111 states have (on average 5.345860943526852) internal successors, (54052), 10241 states have internal predecessors, (54052), 0 states have call successors, (0), 0 states 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 11:10:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 54052 transitions. [2022-11-20 11:10:29,074 INFO L78 Accepts]: Start accepts. Automaton has 10242 states and 54052 transitions. Word has length 8 [2022-11-20 11:10:29,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:29,074 INFO L495 AbstractCegarLoop]: Abstraction has 10242 states and 54052 transitions. [2022-11-20 11:10:29,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:29,074 INFO L276 IsEmpty]: Start isEmpty. Operand 10242 states and 54052 transitions. [2022-11-20 11:10:29,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:10:29,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:29,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:29,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:29,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:29,289 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:29,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:29,289 INFO L85 PathProgramCache]: Analyzing trace with hash 742715292, now seen corresponding path program 1 times [2022-11-20 11:10:29,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:29,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104547985] [2022-11-20 11:10:29,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:29,290 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 11:10:29,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:29,291 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:29,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:29,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:10:29,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:29,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:29,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:29,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:29,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:29,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:29,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:29,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:29,982 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:10:29,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:10:30,039 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:10:30,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:10:30,352 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 11:10:30,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:30,692 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 11:10:30,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:30,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104547985] [2022-11-20 11:10:30,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104547985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:30,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:30,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:10:30,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352272507] [2022-11-20 11:10:30,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:30,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:30,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:30,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:30,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:30,694 INFO L87 Difference]: Start difference. First operand 10242 states and 54052 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 11:10:31,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:31,506 INFO L93 Difference]: Finished difference Result 10248 states and 54066 transitions. [2022-11-20 11:10:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:10:31,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:10:31,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:31,558 INFO L225 Difference]: With dead ends: 10248 [2022-11-20 11:10:31,558 INFO L226 Difference]: Without dead ends: 10248 [2022-11-20 11:10:31,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:31,559 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 57 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:31,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 16 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 104 Unchecked, 0.7s Time] [2022-11-20 11:10:31,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10248 states. [2022-11-20 11:10:31,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10248 to 10243. [2022-11-20 11:10:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10243 states, 10112 states have (on average 5.345628955696203) internal successors, (54055), 10242 states have internal predecessors, (54055), 0 states have call successors, (0), 0 states 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 11:10:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 54055 transitions. [2022-11-20 11:10:31,837 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 54055 transitions. Word has length 8 [2022-11-20 11:10:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:31,837 INFO L495 AbstractCegarLoop]: Abstraction has 10243 states and 54055 transitions. [2022-11-20 11:10:31,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 11:10:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 54055 transitions. [2022-11-20 11:10:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:31,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:31,838 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:31,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:32,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:32,039 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1125508161, now seen corresponding path program 1 times [2022-11-20 11:10:32,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:32,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673959368] [2022-11-20 11:10:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:32,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:32,041 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:32,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:32,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 11:10:32,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:32,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:32,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:32,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:32,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:32,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:32,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:32,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:32,703 INFO L321 Elim1Store]: treesize reduction 86, result has 37.7 percent of original size [2022-11-20 11:10:32,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 59 [2022-11-20 11:10:32,798 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-20 11:10:32,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 289 treesize of output 286 [2022-11-20 11:10:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:33,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:34,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:34,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673959368] [2022-11-20 11:10:34,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673959368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:34,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:34,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 11:10:34,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065651295] [2022-11-20 11:10:34,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:34,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:10:34,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:34,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:10:34,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:10:34,087 INFO L87 Difference]: Start difference. First operand 10243 states and 54055 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:35,699 INFO L93 Difference]: Finished difference Result 20464 states and 108055 transitions. [2022-11-20 11:10:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:10:35,700 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:10:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:35,806 INFO L225 Difference]: With dead ends: 20464 [2022-11-20 11:10:35,806 INFO L226 Difference]: Without dead ends: 20464 [2022-11-20 11:10:35,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:10:35,807 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 166 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:35,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 12 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 364 Unchecked, 1.1s Time] [2022-11-20 11:10:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20464 states. [2022-11-20 11:10:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20464 to 10246. [2022-11-20 11:10:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10246 states, 10115 states have (on average 5.34453781512605) internal successors, (54060), 10245 states have internal predecessors, (54060), 0 states have call successors, (0), 0 states 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 11:10:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 54060 transitions. [2022-11-20 11:10:36,207 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 54060 transitions. Word has length 9 [2022-11-20 11:10:36,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:36,207 INFO L495 AbstractCegarLoop]: Abstraction has 10246 states and 54060 transitions. [2022-11-20 11:10:36,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:36,207 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 54060 transitions. [2022-11-20 11:10:36,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:36,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:36,208 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:36,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:36,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:36,408 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:36,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:36,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1125757725, now seen corresponding path program 2 times [2022-11-20 11:10:36,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:36,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057242872] [2022-11-20 11:10:36,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:10:36,409 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 11:10:36,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:36,410 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:36,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:36,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:10:36,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:36,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:10:36,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:36,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:36,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:36,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:36,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:36,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:36,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:37,003 INFO L321 Elim1Store]: treesize reduction 115, result has 33.5 percent of original size [2022-11-20 11:10:37,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 65 [2022-11-20 11:10:37,070 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-20 11:10:37,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 284 treesize of output 283 [2022-11-20 11:10:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:10:37,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:37,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:37,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057242872] [2022-11-20 11:10:37,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057242872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:37,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:37,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:37,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799041571] [2022-11-20 11:10:37,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:37,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:37,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:37,325 INFO L87 Difference]: Start difference. First operand 10246 states and 54060 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:37,629 INFO L93 Difference]: Finished difference Result 10245 states and 54057 transitions. [2022-11-20 11:10:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:37,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:10:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:37,681 INFO L225 Difference]: With dead ends: 10245 [2022-11-20 11:10:37,681 INFO L226 Difference]: Without dead ends: 10245 [2022-11-20 11:10:37,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:37,682 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:37,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10245 states. [2022-11-20 11:10:38,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10245 to 10245. [2022-11-20 11:10:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10245 states, 10114 states have (on average 5.344769626260629) internal successors, (54057), 10244 states have internal predecessors, (54057), 0 states have call successors, (0), 0 states 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 11:10:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 54057 transitions. [2022-11-20 11:10:38,088 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 54057 transitions. Word has length 9 [2022-11-20 11:10:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:38,088 INFO L495 AbstractCegarLoop]: Abstraction has 10245 states and 54057 transitions. [2022-11-20 11:10:38,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 54057 transitions. [2022-11-20 11:10:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:38,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:38,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:38,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:38,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:38,290 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:38,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1309775875, now seen corresponding path program 1 times [2022-11-20 11:10:38,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:38,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89372541] [2022-11-20 11:10:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:38,291 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 11:10:38,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:38,292 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:38,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:38,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:10:38,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:38,723 INFO L321 Elim1Store]: treesize reduction 316, result has 11.2 percent of original size [2022-11-20 11:10:38,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 92 [2022-11-20 11:10:39,169 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 11:10:39,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:39,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:39,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89372541] [2022-11-20 11:10:39,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89372541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:39,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:39,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:39,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499281738] [2022-11-20 11:10:39,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:39,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:39,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:39,171 INFO L87 Difference]: Start difference. First operand 10245 states and 54057 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:39,464 INFO L93 Difference]: Finished difference Result 10244 states and 54055 transitions. [2022-11-20 11:10:39,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:39,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:39,522 INFO L225 Difference]: With dead ends: 10244 [2022-11-20 11:10:39,522 INFO L226 Difference]: Without dead ends: 10244 [2022-11-20 11:10:39,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:39,523 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:39,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10244 states. [2022-11-20 11:10:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10244 to 10244. [2022-11-20 11:10:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10244 states, 10114 states have (on average 5.344571880561598) internal successors, (54055), 10243 states have internal predecessors, (54055), 0 states have call successors, (0), 0 states 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 11:10:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10244 states to 10244 states and 54055 transitions. [2022-11-20 11:10:40,030 INFO L78 Accepts]: Start accepts. Automaton has 10244 states and 54055 transitions. Word has length 9 [2022-11-20 11:10:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:40,030 INFO L495 AbstractCegarLoop]: Abstraction has 10244 states and 54055 transitions. [2022-11-20 11:10:40,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 10244 states and 54055 transitions. [2022-11-20 11:10:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:40,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:40,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:40,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:40,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:40,232 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:40,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1309749288, now seen corresponding path program 1 times [2022-11-20 11:10:40,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:40,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31567046] [2022-11-20 11:10:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:40,233 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 11:10:40,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:40,234 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:40,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:40,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:10:40,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:40,632 INFO L321 Elim1Store]: treesize reduction 296, result has 11.9 percent of original size [2022-11-20 11:10:40,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 81 [2022-11-20 11:10:40,960 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 11:10:40,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:40,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:40,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31567046] [2022-11-20 11:10:40,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31567046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:40,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:40,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:40,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771374019] [2022-11-20 11:10:40,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:40,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:40,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:40,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:40,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:40,962 INFO L87 Difference]: Start difference. First operand 10244 states and 54055 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:41,252 INFO L93 Difference]: Finished difference Result 10243 states and 54052 transitions. [2022-11-20 11:10:41,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:41,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:41,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:41,304 INFO L225 Difference]: With dead ends: 10243 [2022-11-20 11:10:41,304 INFO L226 Difference]: Without dead ends: 10243 [2022-11-20 11:10:41,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:41,305 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:41,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10243 states. [2022-11-20 11:10:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10243 to 10243. [2022-11-20 11:10:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10243 states, 10113 states have (on average 5.34480371798675) internal successors, (54052), 10242 states have internal predecessors, (54052), 0 states have call successors, (0), 0 states 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 11:10:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 54052 transitions. [2022-11-20 11:10:41,562 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 54052 transitions. Word has length 9 [2022-11-20 11:10:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:41,562 INFO L495 AbstractCegarLoop]: Abstraction has 10243 states and 54052 transitions. [2022-11-20 11:10:41,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 54052 transitions. [2022-11-20 11:10:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:41,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:41,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:41,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:41,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:41,763 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:41,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1309749289, now seen corresponding path program 1 times [2022-11-20 11:10:41,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:41,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790286523] [2022-11-20 11:10:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:41,764 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 11:10:41,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:41,765 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:41,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:41,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 11:10:41,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:42,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:42,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:42,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:42,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:42,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:42,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:42,300 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:10:42,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:10:42,347 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:10:42,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:10:42,655 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 11:10:42,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:42,965 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 11:10:42,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:42,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790286523] [2022-11-20 11:10:42,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790286523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:42,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:42,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:10:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659468658] [2022-11-20 11:10:42,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:42,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:42,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:42,967 INFO L87 Difference]: Start difference. First operand 10243 states and 54052 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:44,006 INFO L93 Difference]: Finished difference Result 10256 states and 54081 transitions. [2022-11-20 11:10:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:10:44,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:10:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:44,056 INFO L225 Difference]: With dead ends: 10256 [2022-11-20 11:10:44,056 INFO L226 Difference]: Without dead ends: 10256 [2022-11-20 11:10:44,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:44,056 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:44,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 86 Unchecked, 0.7s Time] [2022-11-20 11:10:44,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10256 states. [2022-11-20 11:10:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10256 to 10246. [2022-11-20 11:10:44,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10246 states, 10116 states have (on average 5.343910636615263) internal successors, (54059), 10245 states have internal predecessors, (54059), 0 states have call successors, (0), 0 states 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 11:10:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 54059 transitions. [2022-11-20 11:10:44,340 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 54059 transitions. Word has length 9 [2022-11-20 11:10:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:44,340 INFO L495 AbstractCegarLoop]: Abstraction has 10246 states and 54059 transitions. [2022-11-20 11:10:44,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:44,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 54059 transitions. [2022-11-20 11:10:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:44,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:44,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:44,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:44,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:44,541 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:44,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1312964918, now seen corresponding path program 1 times [2022-11-20 11:10:44,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:44,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670363995] [2022-11-20 11:10:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:44,543 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 11:10:44,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:44,544 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:44,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:44,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:10:44,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:44,964 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:10:44,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-20 11:10:45,647 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 11:10:45,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:45,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:45,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670363995] [2022-11-20 11:10:45,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670363995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:45,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:45,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:45,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757260472] [2022-11-20 11:10:45,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:45,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:45,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:45,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:45,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:45,649 INFO L87 Difference]: Start difference. First operand 10246 states and 54059 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:45,940 INFO L93 Difference]: Finished difference Result 10245 states and 54056 transitions. [2022-11-20 11:10:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:45,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:45,994 INFO L225 Difference]: With dead ends: 10245 [2022-11-20 11:10:45,994 INFO L226 Difference]: Without dead ends: 10245 [2022-11-20 11:10:45,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:45,995 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:45,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-11-20 11:10:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10245 states. [2022-11-20 11:10:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10245 to 10245. [2022-11-20 11:10:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10245 states, 10115 states have (on average 5.344142362827484) internal successors, (54056), 10244 states have internal predecessors, (54056), 0 states have call successors, (0), 0 states 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 11:10:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 54056 transitions. [2022-11-20 11:10:46,486 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 54056 transitions. Word has length 9 [2022-11-20 11:10:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:46,486 INFO L495 AbstractCegarLoop]: Abstraction has 10245 states and 54056 transitions. [2022-11-20 11:10:46,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 54056 transitions. [2022-11-20 11:10:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:46,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:46,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:46,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:46,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:46,690 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:46,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1312964919, now seen corresponding path program 1 times [2022-11-20 11:10:46,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:46,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770423878] [2022-11-20 11:10:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:46,691 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 11:10:46,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:46,692 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:46,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:46,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:10:46,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:46,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:46,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:46,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:46,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:46,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:46,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:47,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:47,327 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:10:47,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:10:47,375 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:10:47,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:10:47,689 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 11:10:47,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:48,050 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 11:10:48,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:48,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770423878] [2022-11-20 11:10:48,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770423878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:48,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:48,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:10:48,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128494298] [2022-11-20 11:10:48,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:48,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:48,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:48,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:48,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:48,052 INFO L87 Difference]: Start difference. First operand 10245 states and 54056 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:48,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:48,989 INFO L93 Difference]: Finished difference Result 10255 states and 54080 transitions. [2022-11-20 11:10:48,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:10:48,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:10:48,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:49,037 INFO L225 Difference]: With dead ends: 10255 [2022-11-20 11:10:49,038 INFO L226 Difference]: Without dead ends: 10255 [2022-11-20 11:10:49,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:49,038 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:49,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 20 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 139 Unchecked, 0.9s Time] [2022-11-20 11:10:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10255 states. [2022-11-20 11:10:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10255 to 10246. [2022-11-20 11:10:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10246 states, 10116 states have (on average 5.343910636615263) internal successors, (54059), 10245 states have internal predecessors, (54059), 0 states have call successors, (0), 0 states 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 11:10:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 54059 transitions. [2022-11-20 11:10:49,300 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 54059 transitions. Word has length 9 [2022-11-20 11:10:49,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:49,300 INFO L495 AbstractCegarLoop]: Abstraction has 10246 states and 54059 transitions. [2022-11-20 11:10:49,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 54059 transitions. [2022-11-20 11:10:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:49,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:49,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:49,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:49,502 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:49,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1549577278, now seen corresponding path program 1 times [2022-11-20 11:10:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:49,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759058688] [2022-11-20 11:10:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:49,503 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 11:10:49,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:49,504 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:49,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:49,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:10:49,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:49,875 INFO L321 Elim1Store]: treesize reduction 286, result has 12.3 percent of original size [2022-11-20 11:10:49,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 66 [2022-11-20 11:10:49,921 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 11:10:49,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:49,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:49,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759058688] [2022-11-20 11:10:49,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759058688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:49,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:49,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:49,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206623481] [2022-11-20 11:10:49,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:49,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:49,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:49,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:49,922 INFO L87 Difference]: Start difference. First operand 10246 states and 54059 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:50,315 INFO L93 Difference]: Finished difference Result 10058 states and 53259 transitions. [2022-11-20 11:10:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:50,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:50,356 INFO L225 Difference]: With dead ends: 10058 [2022-11-20 11:10:50,356 INFO L226 Difference]: Without dead ends: 10058 [2022-11-20 11:10:50,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:50,357 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:50,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:10:50,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10058 states. [2022-11-20 11:10:50,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10058 to 10058. [2022-11-20 11:10:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10058 states, 9938 states have (on average 5.359126584825921) internal successors, (53259), 10057 states have internal predecessors, (53259), 0 states have call successors, (0), 0 states 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 11:10:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10058 states to 10058 states and 53259 transitions. [2022-11-20 11:10:50,597 INFO L78 Accepts]: Start accepts. Automaton has 10058 states and 53259 transitions. Word has length 9 [2022-11-20 11:10:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:50,597 INFO L495 AbstractCegarLoop]: Abstraction has 10058 states and 53259 transitions. [2022-11-20 11:10:50,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 10058 states and 53259 transitions. [2022-11-20 11:10:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:50,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:50,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:50,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:50,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:50,798 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:50,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1549577277, now seen corresponding path program 1 times [2022-11-20 11:10:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:50,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249955816] [2022-11-20 11:10:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:50,799 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 11:10:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:50,800 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:50,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:51,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:10:51,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:51,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:51,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:51,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:51,357 INFO L321 Elim1Store]: treesize reduction 150, result has 29.9 percent of original size [2022-11-20 11:10:51,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 71 [2022-11-20 11:10:51,384 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 22 treesize of output 20 [2022-11-20 11:10:51,681 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 11:10:51,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:52,011 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 11:10:52,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:52,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249955816] [2022-11-20 11:10:52,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249955816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:52,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:52,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:10:52,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561292880] [2022-11-20 11:10:52,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:52,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:52,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:52,013 INFO L87 Difference]: Start difference. First operand 10058 states and 53259 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:53,154 INFO L93 Difference]: Finished difference Result 20232 states and 106961 transitions. [2022-11-20 11:10:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:10:53,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:10:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:53,272 INFO L225 Difference]: With dead ends: 20232 [2022-11-20 11:10:53,272 INFO L226 Difference]: Without dead ends: 20232 [2022-11-20 11:10:53,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:10:53,273 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 250 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:53,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 10 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 201 Unchecked, 0.9s Time] [2022-11-20 11:10:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20232 states. [2022-11-20 11:10:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20232 to 10327. [2022-11-20 11:10:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10327 states, 10209 states have (on average 5.33010089137036) internal successors, (54415), 10326 states have internal predecessors, (54415), 0 states have call successors, (0), 0 states 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 11:10:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10327 states to 10327 states and 54415 transitions. [2022-11-20 11:10:53,850 INFO L78 Accepts]: Start accepts. Automaton has 10327 states and 54415 transitions. Word has length 9 [2022-11-20 11:10:53,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:53,850 INFO L495 AbstractCegarLoop]: Abstraction has 10327 states and 54415 transitions. [2022-11-20 11:10:53,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:53,851 INFO L276 IsEmpty]: Start isEmpty. Operand 10327 states and 54415 transitions. [2022-11-20 11:10:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:53,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:53,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:53,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:54,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:54,052 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1549335640, now seen corresponding path program 1 times [2022-11-20 11:10:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:54,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009557386] [2022-11-20 11:10:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:54,053 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 11:10:54,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:54,055 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:54,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:54,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:10:54,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:54,499 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:10:54,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-20 11:10:55,181 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 11:10:55,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:55,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:55,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009557386] [2022-11-20 11:10:55,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009557386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:55,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:55,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:10:55,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242773327] [2022-11-20 11:10:55,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:55,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:10:55,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:55,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:10:55,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:55,183 INFO L87 Difference]: Start difference. First operand 10327 states and 54415 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:55,421 INFO L93 Difference]: Finished difference Result 10329 states and 54427 transitions. [2022-11-20 11:10:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:10:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:55,476 INFO L225 Difference]: With dead ends: 10329 [2022-11-20 11:10:55,477 INFO L226 Difference]: Without dead ends: 10329 [2022-11-20 11:10:55,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:10:55,478 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:55,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-20 11:10:55,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10329 states. [2022-11-20 11:10:55,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10329 to 10329. [2022-11-20 11:10:55,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10329 states, 10211 states have (on average 5.3302321026344135) internal successors, (54427), 10328 states have internal predecessors, (54427), 0 states have call successors, (0), 0 states 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 11:10:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10329 states to 10329 states and 54427 transitions. [2022-11-20 11:10:55,973 INFO L78 Accepts]: Start accepts. Automaton has 10329 states and 54427 transitions. Word has length 9 [2022-11-20 11:10:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:55,973 INFO L495 AbstractCegarLoop]: Abstraction has 10329 states and 54427 transitions. [2022-11-20 11:10:55,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:10:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 10329 states and 54427 transitions. [2022-11-20 11:10:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:55,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:55,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:55,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:56,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:56,178 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:56,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:56,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1549335641, now seen corresponding path program 1 times [2022-11-20 11:10:56,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:56,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822539132] [2022-11-20 11:10:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:56,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:56,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:56,181 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:56,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:56,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:10:56,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:56,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:56,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:56,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:56,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:56,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:56,887 INFO L321 Elim1Store]: treesize reduction 115, result has 33.5 percent of original size [2022-11-20 11:10:56,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 65 [2022-11-20 11:10:56,967 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-20 11:10:56,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1112 treesize of output 1099 [2022-11-20 11:10:57,404 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 11:10:57,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:57,772 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 11:10:57,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:57,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822539132] [2022-11-20 11:10:57,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822539132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:57,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:57,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:10:57,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973045037] [2022-11-20 11:10:57,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:57,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:57,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:57,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:57,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:57,773 INFO L87 Difference]: Start difference. First operand 10329 states and 54427 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:58,555 INFO L93 Difference]: Finished difference Result 10335 states and 54442 transitions. [2022-11-20 11:10:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:10:58,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:10:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:58,610 INFO L225 Difference]: With dead ends: 10335 [2022-11-20 11:10:58,611 INFO L226 Difference]: Without dead ends: 10335 [2022-11-20 11:10:58,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:58,611 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:58,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 63 Unchecked, 0.7s Time] [2022-11-20 11:10:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10335 states. [2022-11-20 11:10:58,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10335 to 10329. [2022-11-20 11:10:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10329 states, 10211 states have (on average 5.330134169033395) internal successors, (54426), 10328 states have internal predecessors, (54426), 0 states have call successors, (0), 0 states 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 11:10:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10329 states to 10329 states and 54426 transitions. [2022-11-20 11:10:58,908 INFO L78 Accepts]: Start accepts. Automaton has 10329 states and 54426 transitions. Word has length 9 [2022-11-20 11:10:58,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:58,908 INFO L495 AbstractCegarLoop]: Abstraction has 10329 states and 54426 transitions. [2022-11-20 11:10:58,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 10329 states and 54426 transitions. [2022-11-20 11:10:58,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:10:58,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:58,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:58,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:10:59,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:59,110 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:10:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1549335516, now seen corresponding path program 1 times [2022-11-20 11:10:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:59,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450364872] [2022-11-20 11:10:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:59,111 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 11:10:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:59,111 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:59,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:10:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:59,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:10:59,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:59,373 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 11:10:59,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:59,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:59,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450364872] [2022-11-20 11:10:59,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450364872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:59,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:59,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:10:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180624308] [2022-11-20 11:10:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:59,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:10:59,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:10:59,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:10:59,375 INFO L87 Difference]: Start difference. First operand 10329 states and 54426 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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 11:11:00,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:00,428 INFO L93 Difference]: Finished difference Result 14716 states and 77405 transitions. [2022-11-20 11:11:00,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:00,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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 11:11:00,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:00,506 INFO L225 Difference]: With dead ends: 14716 [2022-11-20 11:11:00,506 INFO L226 Difference]: Without dead ends: 14716 [2022-11-20 11:11:00,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 11:11:00,507 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 197 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:00,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 10 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:11:00,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14716 states. [2022-11-20 11:11:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14716 to 12348. [2022-11-20 11:11:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12348 states, 12230 states have (on average 5.4937857726901065) internal successors, (67189), 12347 states have internal predecessors, (67189), 0 states have call successors, (0), 0 states 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 11:11:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12348 states to 12348 states and 67189 transitions. [2022-11-20 11:11:00,888 INFO L78 Accepts]: Start accepts. Automaton has 12348 states and 67189 transitions. Word has length 9 [2022-11-20 11:11:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:00,889 INFO L495 AbstractCegarLoop]: Abstraction has 12348 states and 67189 transitions. [2022-11-20 11:11:00,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 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 11:11:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 12348 states and 67189 transitions. [2022-11-20 11:11:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:00,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:00,890 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:00,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:01,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:01,100 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:01,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:01,101 INFO L85 PathProgramCache]: Analyzing trace with hash 531119394, now seen corresponding path program 2 times [2022-11-20 11:11:01,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:01,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117179710] [2022-11-20 11:11:01,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:01,101 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 11:11:01,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:01,102 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:01,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:01,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:01,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:01,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:11:01,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:01,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:01,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:01,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:01,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:01,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:01,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:01,676 INFO L321 Elim1Store]: treesize reduction 115, result has 33.5 percent of original size [2022-11-20 11:11:01,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 65 [2022-11-20 11:11:01,752 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-20 11:11:01,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 149 [2022-11-20 11:11:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:11:02,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:02,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:02,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117179710] [2022-11-20 11:11:02,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117179710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:02,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:02,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:11:02,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956669846] [2022-11-20 11:11:02,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:02,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:02,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:02,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:02,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:02,100 INFO L87 Difference]: Start difference. First operand 12348 states and 67189 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:02,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:02,391 INFO L93 Difference]: Finished difference Result 12347 states and 67186 transitions. [2022-11-20 11:11:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:02,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:02,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:02,455 INFO L225 Difference]: With dead ends: 12347 [2022-11-20 11:11:02,455 INFO L226 Difference]: Without dead ends: 12347 [2022-11-20 11:11:02,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:02,456 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:02,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-20 11:11:02,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12347 states. [2022-11-20 11:11:02,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12347 to 12347. [2022-11-20 11:11:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12347 states, 12229 states have (on average 5.493989696622782) internal successors, (67186), 12346 states have internal predecessors, (67186), 0 states have call successors, (0), 0 states 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 11:11:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12347 states to 12347 states and 67186 transitions. [2022-11-20 11:11:02,982 INFO L78 Accepts]: Start accepts. Automaton has 12347 states and 67186 transitions. Word has length 10 [2022-11-20 11:11:02,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:02,983 INFO L495 AbstractCegarLoop]: Abstraction has 12347 states and 67186 transitions. [2022-11-20 11:11:02,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 12347 states and 67186 transitions. [2022-11-20 11:11:02,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:02,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:02,984 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:02,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:03,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:03,184 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:03,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:03,185 INFO L85 PathProgramCache]: Analyzing trace with hash 538744092, now seen corresponding path program 2 times [2022-11-20 11:11:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:03,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171446953] [2022-11-20 11:11:03,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:03,186 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 11:11:03,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:03,187 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:03,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:03,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:03,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:03,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:11:03,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:03,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:03,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:03,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:03,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:03,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:03,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:03,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:03,767 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:11:03,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:11:03,820 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:11:03,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:11:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:11:04,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:04,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:04,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171446953] [2022-11-20 11:11:04,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171446953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:04,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:04,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:11:04,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307455112] [2022-11-20 11:11:04,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:04,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:04,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:04,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:04,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:04,110 INFO L87 Difference]: Start difference. First operand 12347 states and 67186 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:04,426 INFO L93 Difference]: Finished difference Result 12346 states and 67183 transitions. [2022-11-20 11:11:04,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:04,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:04,492 INFO L225 Difference]: With dead ends: 12346 [2022-11-20 11:11:04,493 INFO L226 Difference]: Without dead ends: 12346 [2022-11-20 11:11:04,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:04,493 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:04,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-20 11:11:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12346 states. [2022-11-20 11:11:05,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12346 to 12346. [2022-11-20 11:11:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12346 states, 12228 states have (on average 5.494193653909061) internal successors, (67183), 12345 states have internal predecessors, (67183), 0 states have call successors, (0), 0 states 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 11:11:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12346 states to 12346 states and 67183 transitions. [2022-11-20 11:11:05,087 INFO L78 Accepts]: Start accepts. Automaton has 12346 states and 67183 transitions. Word has length 10 [2022-11-20 11:11:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:05,087 INFO L495 AbstractCegarLoop]: Abstraction has 12346 states and 67183 transitions. [2022-11-20 11:11:05,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 12346 states and 67183 transitions. [2022-11-20 11:11:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:05,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:05,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:05,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:05,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:05,290 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1948351225, now seen corresponding path program 1 times [2022-11-20 11:11:05,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:05,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39730514] [2022-11-20 11:11:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:05,292 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 11:11:05,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:05,293 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:05,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:05,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:11:05,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:05,753 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:11:05,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-20 11:11:06,527 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 11:11:06,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:06,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:06,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39730514] [2022-11-20 11:11:06,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39730514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:06,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:06,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:11:06,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819747823] [2022-11-20 11:11:06,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:06,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:06,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:06,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:06,529 INFO L87 Difference]: Start difference. First operand 12346 states and 67183 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:06,837 INFO L93 Difference]: Finished difference Result 12342 states and 67162 transitions. [2022-11-20 11:11:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:06,902 INFO L225 Difference]: With dead ends: 12342 [2022-11-20 11:11:06,902 INFO L226 Difference]: Without dead ends: 12342 [2022-11-20 11:11:06,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:06,903 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:06,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-20 11:11:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12342 states. [2022-11-20 11:11:07,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12342 to 12342. [2022-11-20 11:11:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12342 states, 12224 states have (on average 5.494273560209424) internal successors, (67162), 12341 states have internal predecessors, (67162), 0 states have call successors, (0), 0 states 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 11:11:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12342 states to 12342 states and 67162 transitions. [2022-11-20 11:11:07,661 INFO L78 Accepts]: Start accepts. Automaton has 12342 states and 67162 transitions. Word has length 10 [2022-11-20 11:11:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:07,662 INFO L495 AbstractCegarLoop]: Abstraction has 12342 states and 67162 transitions. [2022-11-20 11:11:07,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12342 states and 67162 transitions. [2022-11-20 11:11:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:07,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:07,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:07,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:11:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:07,876 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1948351226, now seen corresponding path program 1 times [2022-11-20 11:11:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:07,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564797279] [2022-11-20 11:11:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:07,877 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 11:11:07,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:07,878 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:07,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:08,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:11:08,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:08,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:08,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:08,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:08,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:08,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:08,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:08,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:08,507 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:11:08,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:11:08,551 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:11:08,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:11:08,915 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 11:11:08,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:09,249 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 11:11:09,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:09,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564797279] [2022-11-20 11:11:09,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564797279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:09,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:09,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:11:09,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842626037] [2022-11-20 11:11:09,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:09,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:11:09,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:09,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:11:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:09,251 INFO L87 Difference]: Start difference. First operand 12342 states and 67162 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:09,977 INFO L93 Difference]: Finished difference Result 12364 states and 67223 transitions. [2022-11-20 11:11:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:11:09,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:10,045 INFO L225 Difference]: With dead ends: 12364 [2022-11-20 11:11:10,045 INFO L226 Difference]: Without dead ends: 12364 [2022-11-20 11:11:10,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:10,046 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:10,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 80 Unchecked, 0.6s Time] [2022-11-20 11:11:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12364 states. [2022-11-20 11:11:10,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12364 to 12342. [2022-11-20 11:11:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12342 states, 12224 states have (on average 5.493946335078534) internal successors, (67158), 12341 states have internal predecessors, (67158), 0 states have call successors, (0), 0 states 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 11:11:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12342 states to 12342 states and 67158 transitions. [2022-11-20 11:11:10,395 INFO L78 Accepts]: Start accepts. Automaton has 12342 states and 67158 transitions. Word has length 10 [2022-11-20 11:11:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:10,395 INFO L495 AbstractCegarLoop]: Abstraction has 12342 states and 67158 transitions. [2022-11-20 11:11:10,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 12342 states and 67158 transitions. [2022-11-20 11:11:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:10,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:10,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:10,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:10,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:10,610 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:10,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1947515279, now seen corresponding path program 1 times [2022-11-20 11:11:10,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:10,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188415600] [2022-11-20 11:11:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:10,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:10,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:10,612 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:10,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:10,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:11:10,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:11,093 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:11:11,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-20 11:11:12,151 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 11:11:12,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:12,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:12,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188415600] [2022-11-20 11:11:12,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188415600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:12,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:12,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:11:12,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643808437] [2022-11-20 11:11:12,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:12,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:12,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:12,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:12,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:12,153 INFO L87 Difference]: Start difference. First operand 12342 states and 67158 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:12,458 INFO L93 Difference]: Finished difference Result 12341 states and 67154 transitions. [2022-11-20 11:11:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:12,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:12,524 INFO L225 Difference]: With dead ends: 12341 [2022-11-20 11:11:12,524 INFO L226 Difference]: Without dead ends: 12341 [2022-11-20 11:11:12,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:12,525 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:12,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-20 11:11:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12341 states. [2022-11-20 11:11:12,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12341 to 12341. [2022-11-20 11:11:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12341 states, 12223 states have (on average 5.494068559273501) internal successors, (67154), 12340 states have internal predecessors, (67154), 0 states have call successors, (0), 0 states 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 11:11:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12341 states to 12341 states and 67154 transitions. [2022-11-20 11:11:12,887 INFO L78 Accepts]: Start accepts. Automaton has 12341 states and 67154 transitions. Word has length 10 [2022-11-20 11:11:12,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:12,887 INFO L495 AbstractCegarLoop]: Abstraction has 12341 states and 67154 transitions. [2022-11-20 11:11:12,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:12,887 INFO L276 IsEmpty]: Start isEmpty. Operand 12341 states and 67154 transitions. [2022-11-20 11:11:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:12,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:12,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:12,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:11:13,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:13,088 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1947515280, now seen corresponding path program 1 times [2022-11-20 11:11:13,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:13,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078641690] [2022-11-20 11:11:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:13,089 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 11:11:13,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:13,090 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:13,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:13,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:11:13,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:13,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:13,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:13,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:13,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:13,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:13,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:13,673 INFO L321 Elim1Store]: treesize reduction 115, result has 33.5 percent of original size [2022-11-20 11:11:13,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 65 [2022-11-20 11:11:13,734 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-20 11:11:13,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 275 [2022-11-20 11:11:14,131 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 11:11:14,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:14,473 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 11:11:14,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:14,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078641690] [2022-11-20 11:11:14,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078641690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:14,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:14,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:11:14,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786545186] [2022-11-20 11:11:14,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:14,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:11:14,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:11:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:14,476 INFO L87 Difference]: Start difference. First operand 12341 states and 67154 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:15,356 INFO L93 Difference]: Finished difference Result 12354 states and 67184 transitions. [2022-11-20 11:11:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:11:15,357 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:15,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:15,419 INFO L225 Difference]: With dead ends: 12354 [2022-11-20 11:11:15,419 INFO L226 Difference]: Without dead ends: 12354 [2022-11-20 11:11:15,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:15,420 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 51 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:15,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 16 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 96 Unchecked, 0.8s Time] [2022-11-20 11:11:15,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12354 states. [2022-11-20 11:11:15,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12354 to 12341. [2022-11-20 11:11:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12341 states, 12223 states have (on average 5.493986746297963) internal successors, (67153), 12340 states have internal predecessors, (67153), 0 states have call successors, (0), 0 states 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 11:11:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12341 states to 12341 states and 67153 transitions. [2022-11-20 11:11:15,771 INFO L78 Accepts]: Start accepts. Automaton has 12341 states and 67153 transitions. Word has length 10 [2022-11-20 11:11:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:15,771 INFO L495 AbstractCegarLoop]: Abstraction has 12341 states and 67153 transitions. [2022-11-20 11:11:15,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand 12341 states and 67153 transitions. [2022-11-20 11:11:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:15,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:15,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:15,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:11:15,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:15,978 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:15,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:15,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2047204893, now seen corresponding path program 1 times [2022-11-20 11:11:15,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:15,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957988828] [2022-11-20 11:11:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:15,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:15,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:15,980 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:15,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:16,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:11:16,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:16,413 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:11:16,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-20 11:11:17,144 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 11:11:17,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:17,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:17,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957988828] [2022-11-20 11:11:17,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957988828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:17,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:17,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:11:17,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005827323] [2022-11-20 11:11:17,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:17,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:17,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:17,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:17,146 INFO L87 Difference]: Start difference. First operand 12341 states and 67153 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:17,561 INFO L93 Difference]: Finished difference Result 12340 states and 67148 transitions. [2022-11-20 11:11:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:17,620 INFO L225 Difference]: With dead ends: 12340 [2022-11-20 11:11:17,620 INFO L226 Difference]: Without dead ends: 12340 [2022-11-20 11:11:17,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:17,621 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:17,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-20 11:11:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12340 states. [2022-11-20 11:11:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12340 to 12340. [2022-11-20 11:11:17,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12340 states, 12222 states have (on average 5.494027164130257) internal successors, (67148), 12339 states have internal predecessors, (67148), 0 states have call successors, (0), 0 states 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 11:11:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12340 states to 12340 states and 67148 transitions. [2022-11-20 11:11:17,965 INFO L78 Accepts]: Start accepts. Automaton has 12340 states and 67148 transitions. Word has length 10 [2022-11-20 11:11:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:17,965 INFO L495 AbstractCegarLoop]: Abstraction has 12340 states and 67148 transitions. [2022-11-20 11:11:17,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 12340 states and 67148 transitions. [2022-11-20 11:11:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:17,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:17,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:17,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:11:18,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:18,167 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:18,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:18,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2047204894, now seen corresponding path program 1 times [2022-11-20 11:11:18,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:18,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525838721] [2022-11-20 11:11:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:18,168 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 11:11:18,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:18,169 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:18,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:18,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:11:18,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:18,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:18,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:18,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:18,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:18,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:18,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:18,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:18,772 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:11:18,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:11:18,817 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:11:18,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:11:19,516 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 11:11:19,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:19,852 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 11:11:19,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:19,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525838721] [2022-11-20 11:11:19,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525838721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:19,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:19,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:11:19,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470933384] [2022-11-20 11:11:19,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:19,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:11:19,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:19,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:11:19,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:19,854 INFO L87 Difference]: Start difference. First operand 12340 states and 67148 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:20,822 INFO L93 Difference]: Finished difference Result 12351 states and 67176 transitions. [2022-11-20 11:11:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:11:20,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:20,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:20,885 INFO L225 Difference]: With dead ends: 12351 [2022-11-20 11:11:20,885 INFO L226 Difference]: Without dead ends: 12351 [2022-11-20 11:11:20,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:11:20,886 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:20,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 20 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 129 Unchecked, 0.7s Time] [2022-11-20 11:11:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12351 states. [2022-11-20 11:11:21,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12351 to 12340. [2022-11-20 11:11:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12340 states, 12222 states have (on average 5.493945344460808) internal successors, (67147), 12339 states have internal predecessors, (67147), 0 states have call successors, (0), 0 states 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 11:11:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12340 states to 12340 states and 67147 transitions. [2022-11-20 11:11:21,388 INFO L78 Accepts]: Start accepts. Automaton has 12340 states and 67147 transitions. Word has length 10 [2022-11-20 11:11:21,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:21,388 INFO L495 AbstractCegarLoop]: Abstraction has 12340 states and 67147 transitions. [2022-11-20 11:11:21,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand 12340 states and 67147 transitions. [2022-11-20 11:11:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:21,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:21,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:21,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:21,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:21,589 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:21,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash 792248959, now seen corresponding path program 1 times [2022-11-20 11:11:21,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:21,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988593745] [2022-11-20 11:11:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:21,591 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 11:11:21,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:21,591 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:21,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:21,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:11:21,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:21,894 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 11:11:21,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:22,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-11-20 11:11:22,228 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 11:11:22,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988593745] [2022-11-20 11:11:22,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988593745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:22,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:22,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 11:11:22,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659255860] [2022-11-20 11:11:22,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:22,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:11:22,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:22,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:11:22,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:11:22,230 INFO L87 Difference]: Start difference. First operand 12340 states and 67147 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:24,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:24,406 INFO L93 Difference]: Finished difference Result 35854 states and 196659 transitions. [2022-11-20 11:11:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:11:24,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:25,002 INFO L225 Difference]: With dead ends: 35854 [2022-11-20 11:11:25,002 INFO L226 Difference]: Without dead ends: 35854 [2022-11-20 11:11:25,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:11:25,003 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 496 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:25,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 11 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 11:11:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35854 states. [2022-11-20 11:11:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35854 to 15324. [2022-11-20 11:11:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15324 states, 15206 states have (on average 5.693476259371301) internal successors, (86575), 15323 states have internal predecessors, (86575), 0 states have call successors, (0), 0 states 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 11:11:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15324 states to 15324 states and 86575 transitions. [2022-11-20 11:11:25,739 INFO L78 Accepts]: Start accepts. Automaton has 15324 states and 86575 transitions. Word has length 10 [2022-11-20 11:11:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:25,740 INFO L495 AbstractCegarLoop]: Abstraction has 15324 states and 86575 transitions. [2022-11-20 11:11:25,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 15324 states and 86575 transitions. [2022-11-20 11:11:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:25,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:25,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:25,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:25,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:25,941 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:25,941 INFO L85 PathProgramCache]: Analyzing trace with hash 784765876, now seen corresponding path program 1 times [2022-11-20 11:11:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:25,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694482540] [2022-11-20 11:11:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:25,942 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 11:11:25,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:25,943 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:25,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:26,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:11:26,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:26,461 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:11:26,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-20 11:11:27,670 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 11:11:27,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:27,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:27,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694482540] [2022-11-20 11:11:27,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694482540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:27,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:27,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:11:27,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103909015] [2022-11-20 11:11:27,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:27,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:27,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:27,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:27,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:27,673 INFO L87 Difference]: Start difference. First operand 15324 states and 86575 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:28,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:28,070 INFO L93 Difference]: Finished difference Result 15323 states and 86569 transitions. [2022-11-20 11:11:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:28,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:28,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:28,181 INFO L225 Difference]: With dead ends: 15323 [2022-11-20 11:11:28,181 INFO L226 Difference]: Without dead ends: 15323 [2022-11-20 11:11:28,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:28,182 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:28,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-20 11:11:28,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15323 states. [2022-11-20 11:11:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15323 to 15323. [2022-11-20 11:11:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15323 states, 15205 states have (on average 5.693456099967116) internal successors, (86569), 15322 states have internal predecessors, (86569), 0 states have call successors, (0), 0 states 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 11:11:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15323 states to 15323 states and 86569 transitions. [2022-11-20 11:11:28,699 INFO L78 Accepts]: Start accepts. Automaton has 15323 states and 86569 transitions. Word has length 10 [2022-11-20 11:11:28,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:28,699 INFO L495 AbstractCegarLoop]: Abstraction has 15323 states and 86569 transitions. [2022-11-20 11:11:28,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 15323 states and 86569 transitions. [2022-11-20 11:11:28,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:28,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:28,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:28,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:28,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:28,900 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:28,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash 784765877, now seen corresponding path program 1 times [2022-11-20 11:11:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:28,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782440120] [2022-11-20 11:11:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:28,901 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 11:11:28,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:28,902 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:28,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 11:11:29,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:29,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:29,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:29,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:29,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:29,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:29,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:29,539 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:11:29,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:11:29,585 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:11:29,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:11:30,519 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 11:11:30,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:30,891 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 11:11:30,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:30,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782440120] [2022-11-20 11:11:30,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782440120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:30,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:30,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-20 11:11:30,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846740472] [2022-11-20 11:11:30,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:30,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:11:30,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:30,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:11:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:30,893 INFO L87 Difference]: Start difference. First operand 15323 states and 86569 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:31,869 INFO L93 Difference]: Finished difference Result 15330 states and 86588 transitions. [2022-11-20 11:11:31,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:11:31,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:31,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:31,955 INFO L225 Difference]: With dead ends: 15330 [2022-11-20 11:11:31,955 INFO L226 Difference]: Without dead ends: 15330 [2022-11-20 11:11:31,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:11:31,956 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:31,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 20 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 129 Unchecked, 0.7s Time] [2022-11-20 11:11:31,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15330 states. [2022-11-20 11:11:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15330 to 15323. [2022-11-20 11:11:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15323 states, 15205 states have (on average 5.693390332127589) internal successors, (86568), 15322 states have internal predecessors, (86568), 0 states have call successors, (0), 0 states 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 11:11:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15323 states to 15323 states and 86568 transitions. [2022-11-20 11:11:32,430 INFO L78 Accepts]: Start accepts. Automaton has 15323 states and 86568 transitions. Word has length 10 [2022-11-20 11:11:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:32,430 INFO L495 AbstractCegarLoop]: Abstraction has 15323 states and 86568 transitions. [2022-11-20 11:11:32,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:32,431 INFO L276 IsEmpty]: Start isEmpty. Operand 15323 states and 86568 transitions. [2022-11-20 11:11:32,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:11:32,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:32,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:32,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:11:32,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:32,632 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash 784765752, now seen corresponding path program 1 times [2022-11-20 11:11:32,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:32,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450679711] [2022-11-20 11:11:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:32,633 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 11:11:32,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:32,634 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:32,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:11:32,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:33,235 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-20 11:11:33,235 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-20 11:11:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:11:33,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:11:33,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:33,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450679711] [2022-11-20 11:11:33,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450679711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:33,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:33,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 11:11:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60903441] [2022-11-20 11:11:33,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:33,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:11:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:33,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:11:33,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:11:33,927 INFO L87 Difference]: Start difference. First operand 15323 states and 86568 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:37,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:37,087 INFO L93 Difference]: Finished difference Result 25562 states and 145272 transitions. [2022-11-20 11:11:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:11:37,088 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:11:37,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:37,243 INFO L225 Difference]: With dead ends: 25562 [2022-11-20 11:11:37,243 INFO L226 Difference]: Without dead ends: 25562 [2022-11-20 11:11:37,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:11:37,243 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 405 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:37,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 20 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 11:11:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25562 states. [2022-11-20 11:11:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25562 to 22862. [2022-11-20 11:11:38,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22862 states, 22744 states have (on average 5.858688005627858) internal successors, (133250), 22861 states have internal predecessors, (133250), 0 states have call successors, (0), 0 states 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 11:11:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22862 states to 22862 states and 133250 transitions. [2022-11-20 11:11:38,354 INFO L78 Accepts]: Start accepts. Automaton has 22862 states and 133250 transitions. Word has length 10 [2022-11-20 11:11:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:38,354 INFO L495 AbstractCegarLoop]: Abstraction has 22862 states and 133250 transitions. [2022-11-20 11:11:38,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 22862 states and 133250 transitions. [2022-11-20 11:11:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:11:38,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:38,355 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:38,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:38,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:38,556 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:38,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash -718390615, now seen corresponding path program 2 times [2022-11-20 11:11:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:38,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231064915] [2022-11-20 11:11:38,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:38,557 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 11:11:38,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:38,558 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:38,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:38,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:38,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:38,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:11:38,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:38,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:38,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:38,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:38,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:38,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:38,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:38,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:39,176 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:11:39,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:11:39,226 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:11:39,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:11:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:11:39,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:39,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:39,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231064915] [2022-11-20 11:11:39,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231064915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:39,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:39,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:11:39,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822692350] [2022-11-20 11:11:39,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:39,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:39,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:39,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:39,546 INFO L87 Difference]: Start difference. First operand 22862 states and 133250 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:39,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:39,957 INFO L93 Difference]: Finished difference Result 22861 states and 133247 transitions. [2022-11-20 11:11:39,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:39,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:11:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:40,100 INFO L225 Difference]: With dead ends: 22861 [2022-11-20 11:11:40,100 INFO L226 Difference]: Without dead ends: 22861 [2022-11-20 11:11:40,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:40,100 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:40,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-20 11:11:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22861 states. [2022-11-20 11:11:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22861 to 22861. [2022-11-20 11:11:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22861 states, 22743 states have (on average 5.858813700918964) internal successors, (133247), 22860 states have internal predecessors, (133247), 0 states have call successors, (0), 0 states 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 11:11:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22861 states to 22861 states and 133247 transitions. [2022-11-20 11:11:41,255 INFO L78 Accepts]: Start accepts. Automaton has 22861 states and 133247 transitions. Word has length 11 [2022-11-20 11:11:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:41,255 INFO L495 AbstractCegarLoop]: Abstraction has 22861 states and 133247 transitions. [2022-11-20 11:11:41,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 22861 states and 133247 transitions. [2022-11-20 11:11:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:11:41,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:41,257 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:41,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:11:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:41,458 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash -715174985, now seen corresponding path program 2 times [2022-11-20 11:11:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:41,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983513207] [2022-11-20 11:11:41,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:41,459 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 11:11:41,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:41,460 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:41,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:41,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:41,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:41,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:11:41,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:41,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:41,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:41,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:41,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:41,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:41,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:42,066 INFO L321 Elim1Store]: treesize reduction 115, result has 33.5 percent of original size [2022-11-20 11:11:42,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 65 [2022-11-20 11:11:42,133 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-20 11:11:42,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 275 [2022-11-20 11:11:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:11:42,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:42,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:42,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983513207] [2022-11-20 11:11:42,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983513207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:42,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:42,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:11:42,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904819440] [2022-11-20 11:11:42,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:42,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:42,462 INFO L87 Difference]: Start difference. First operand 22861 states and 133247 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:42,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:42,877 INFO L93 Difference]: Finished difference Result 22860 states and 133244 transitions. [2022-11-20 11:11:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:42,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:11:42,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:43,560 INFO L225 Difference]: With dead ends: 22860 [2022-11-20 11:11:43,560 INFO L226 Difference]: Without dead ends: 22860 [2022-11-20 11:11:43,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:43,561 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:43,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-20 11:11:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22860 states. [2022-11-20 11:11:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22860 to 22860. [2022-11-20 11:11:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22860 states, 22742 states have (on average 5.858939407264093) internal successors, (133244), 22859 states have internal predecessors, (133244), 0 states have call successors, (0), 0 states 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 11:11:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22860 states to 22860 states and 133244 transitions. [2022-11-20 11:11:44,329 INFO L78 Accepts]: Start accepts. Automaton has 22860 states and 133244 transitions. Word has length 11 [2022-11-20 11:11:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:44,329 INFO L495 AbstractCegarLoop]: Abstraction has 22860 states and 133244 transitions. [2022-11-20 11:11:44,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 22860 states and 133244 transitions. [2022-11-20 11:11:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:11:44,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:44,330 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:44,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:11:44,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:44,531 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash -478562627, now seen corresponding path program 2 times [2022-11-20 11:11:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:44,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908384629] [2022-11-20 11:11:44,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:44,532 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 11:11:44,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:44,534 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:44,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:44,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:44,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:44,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:11:44,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:44,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:44,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:44,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:44,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:45,134 INFO L321 Elim1Store]: treesize reduction 150, result has 29.9 percent of original size [2022-11-20 11:11:45,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 71 [2022-11-20 11:11:45,162 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 22 treesize of output 20 [2022-11-20 11:11:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:11:45,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:45,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:45,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908384629] [2022-11-20 11:11:45,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908384629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:45,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:45,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:11:45,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043487834] [2022-11-20 11:11:45,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:45,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:45,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:45,419 INFO L87 Difference]: Start difference. First operand 22860 states and 133244 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:11:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:46,399 INFO L93 Difference]: Finished difference Result 22858 states and 133235 transitions. [2022-11-20 11:11:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:46,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11 [2022-11-20 11:11:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:46,573 INFO L225 Difference]: With dead ends: 22858 [2022-11-20 11:11:46,573 INFO L226 Difference]: Without dead ends: 22858 [2022-11-20 11:11:46,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 11:11:46,574 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:46,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-20 11:11:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22858 states. [2022-11-20 11:11:47,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22858 to 22858. [2022-11-20 11:11:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22858 states, 22740 states have (on average 5.85905892700088) internal successors, (133235), 22857 states have internal predecessors, (133235), 0 states have call successors, (0), 0 states 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 11:11:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22858 states to 22858 states and 133235 transitions. [2022-11-20 11:11:48,132 INFO L78 Accepts]: Start accepts. Automaton has 22858 states and 133235 transitions. Word has length 11 [2022-11-20 11:11:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:48,133 INFO L495 AbstractCegarLoop]: Abstraction has 22858 states and 133235 transitions. [2022-11-20 11:11:48,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 11:11:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 22858 states and 133235 transitions. [2022-11-20 11:11:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:11:48,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:48,134 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:48,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:48,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:48,348 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:48,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash -478804263, now seen corresponding path program 2 times [2022-11-20 11:11:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:48,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123676237] [2022-11-20 11:11:48,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:48,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:48,350 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:48,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:48,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:11:48,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:48,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:11:48,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:48,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:48,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:48,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:48,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:48,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:48,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:48,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:11:48,973 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-20 11:11:48,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-20 11:11:49,028 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 11:11:49,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-20 11:11:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:11:49,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:49,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:49,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123676237] [2022-11-20 11:11:49,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123676237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:49,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:49,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:11:49,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628271649] [2022-11-20 11:11:49,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:49,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:49,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:49,292 INFO L87 Difference]: Start difference. First operand 22858 states and 133235 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:49,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:49,689 INFO L93 Difference]: Finished difference Result 22857 states and 133232 transitions. [2022-11-20 11:11:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:49,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:11:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:49,827 INFO L225 Difference]: With dead ends: 22857 [2022-11-20 11:11:49,827 INFO L226 Difference]: Without dead ends: 22857 [2022-11-20 11:11:49,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:49,828 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:49,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-20 11:11:49,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22857 states. [2022-11-20 11:11:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22857 to 22857. [2022-11-20 11:11:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22857 states, 22739 states have (on average 5.859184660715071) internal successors, (133232), 22856 states have internal predecessors, (133232), 0 states have call successors, (0), 0 states 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 11:11:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22857 states to 22857 states and 133232 transitions. [2022-11-20 11:11:51,060 INFO L78 Accepts]: Start accepts. Automaton has 22857 states and 133232 transitions. Word has length 11 [2022-11-20 11:11:51,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:51,061 INFO L495 AbstractCegarLoop]: Abstraction has 22857 states and 133232 transitions. [2022-11-20 11:11:51,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:51,061 INFO L276 IsEmpty]: Start isEmpty. Operand 22857 states and 133232 transitions. [2022-11-20 11:11:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:11:51,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:51,062 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:51,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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)] Ended with exit code 0 [2022-11-20 11:11:51,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:51,262 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:11:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:51,263 INFO L85 PathProgramCache]: Analyzing trace with hash 270202238, now seen corresponding path program 2 times [2022-11-20 11:11:51,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:11:51,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011596716] [2022-11-20 11:11:51,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:11:51,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:11:51,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:11:51,264 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:51,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:11:51,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:11:51,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:51,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:11:51,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:51,952 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-20 11:11:51,953 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-20 11:11:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:52,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:53,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:11:53,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011596716] [2022-11-20 11:11:53,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011596716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:53,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:53,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-20 11:11:53,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151306135] [2022-11-20 11:11:53,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:53,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:11:53,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:11:53,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:11:53,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:11:53,802 INFO L87 Difference]: Start difference. First operand 22857 states and 133232 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:19,275 INFO L93 Difference]: Finished difference Result 71168 states and 398369 transitions. [2022-11-20 11:12:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:12:19,277 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:12:19,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:19,737 INFO L225 Difference]: With dead ends: 71168 [2022-11-20 11:12:19,737 INFO L226 Difference]: Without dead ends: 71168 [2022-11-20 11:12:19,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:12:19,738 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 980 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:19,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 136 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2022-11-20 11:12:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71168 states. [2022-11-20 11:12:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71168 to 41361. [2022-11-20 11:12:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41361 states, 41243 states have (on average 5.802778653347235) internal successors, (239324), 41360 states have internal predecessors, (239324), 0 states have call successors, (0), 0 states 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 11:12:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41361 states to 41361 states and 239324 transitions. [2022-11-20 11:12:22,556 INFO L78 Accepts]: Start accepts. Automaton has 41361 states and 239324 transitions. Word has length 11 [2022-11-20 11:12:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:22,556 INFO L495 AbstractCegarLoop]: Abstraction has 41361 states and 239324 transitions. [2022-11-20 11:12:22,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 41361 states and 239324 transitions. [2022-11-20 11:12:22,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:12:22,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:22,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:22,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:12:22,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:12:22,758 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-20 11:12:22,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:22,759 INFO L85 PathProgramCache]: Analyzing trace with hash 269221480, now seen corresponding path program 1 times [2022-11-20 11:12:22,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:12:22,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357318824] [2022-11-20 11:12:22,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:22,759 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 11:12:22,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:12:22,760 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:12:22,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c399012-5064-40b1-871a-21ed416f77b0/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 11:12:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:23,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:12:23,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:23,288 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-20 11:12:23,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 77