./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/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_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/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_76467dec-74fa-4e43-86b7-85398fdf14f0/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 ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 --- 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 11:43:42,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:43:42,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:43:42,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:43:42,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:43:42,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:43:42,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:43:42,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:43:42,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:43:42,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:43:42,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:43:42,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:43:42,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:43:42,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:43:43,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:43:43,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:43:43,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:43:43,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:43:43,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:43:43,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:43:43,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:43:43,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:43:43,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:43:43,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:43:43,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:43:43,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:43:43,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:43:43,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:43:43,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:43:43,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:43:43,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:43:43,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:43:43,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:43:43,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:43:43,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:43:43,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:43:43,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:43:43,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:43:43,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:43:43,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:43:43,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:43:43,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:43:43,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:43:43,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:43:43,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:43:43,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:43:43,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:43:43,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:43:43,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:43:43,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:43:43,109 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:43:43,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:43:43,111 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:43:43,111 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:43:43,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:43:43,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:43:43,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:43:43,112 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:43:43,112 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:43:43,112 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:43:43,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:43:43,113 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:43:43,113 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:43:43,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:43:43,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:43:43,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:43:43,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:43:43,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:43:43,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:43:43,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:43:43,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:43:43,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:43:43,116 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_76467dec-74fa-4e43-86b7-85398fdf14f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 [2022-11-20 11:43:43,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:43:43,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:43:43,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:43:43,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:43:43,430 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:43:43,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2022-11-20 11:43:46,675 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:43:46,998 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:43:46,999 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2022-11-20 11:43:47,017 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/data/92fdfe28c/64853e0a685f4e21b316bfc8328bdce5/FLAGd3603902e [2022-11-20 11:43:47,035 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/data/92fdfe28c/64853e0a685f4e21b316bfc8328bdce5 [2022-11-20 11:43:47,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:43:47,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:43:47,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:43:47,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:43:47,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:43:47,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:47" (1/1) ... [2022-11-20 11:43:47,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d11ab69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:47, skipping insertion in model container [2022-11-20 11:43:47,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:47" (1/1) ... [2022-11-20 11:43:47,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:43:47,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:43:47,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:43:47,597 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 11:43:47,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@772b9330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:47, skipping insertion in model container [2022-11-20 11:43:47,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:43:47,600 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 11:43:47,602 INFO L158 Benchmark]: Toolchain (without parser) took 560.61ms. Allocated memory is still 209.7MB. Free memory was 162.9MB in the beginning and 151.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:43:47,603 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:43:47,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.98ms. Allocated memory is still 209.7MB. Free memory was 162.3MB in the beginning and 151.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:43:47,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.98ms. Allocated memory is still 209.7MB. Free memory was 162.3MB in the beginning and 151.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 526]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/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_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/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_76467dec-74fa-4e43-86b7-85398fdf14f0/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 ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 --- 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 11:43:50,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:43:50,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:43:50,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:43:50,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:43:50,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:43:50,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:43:50,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:43:50,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:43:50,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:43:50,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:43:50,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:43:50,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:43:50,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:43:50,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:43:50,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:43:50,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:43:50,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:43:50,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:43:50,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:43:50,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:43:50,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:43:50,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:43:50,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:43:50,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:43:50,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:43:50,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:43:50,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:43:50,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:43:50,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:43:50,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:43:50,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:43:50,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:43:50,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:43:50,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:43:50,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:43:50,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:43:50,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:43:50,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:43:50,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:43:50,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:43:50,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:43:50,267 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:43:50,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:43:50,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:43:50,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:43:50,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:43:50,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:43:50,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:43:50,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:43:50,272 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:43:50,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:43:50,273 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:43:50,274 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:43:50,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:43:50,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:43:50,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:43:50,275 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:43:50,275 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:43:50,275 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:43:50,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:43:50,276 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:43:50,276 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:43:50,276 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:43:50,276 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:43:50,276 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:43:50,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:43:50,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:43:50,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:43:50,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:43:50,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:43:50,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:43:50,278 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:43:50,278 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:43:50,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:43:50,279 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_76467dec-74fa-4e43-86b7-85398fdf14f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 [2022-11-20 11:43:50,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:43:50,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:43:50,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:43:50,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:43:50,719 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:43:50,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2022-11-20 11:43:54,244 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:43:54,485 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:43:54,485 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2022-11-20 11:43:54,499 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/data/e364565db/3583694d907341e2bed49c7d66680396/FLAG0f1bc5cc9 [2022-11-20 11:43:54,520 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/data/e364565db/3583694d907341e2bed49c7d66680396 [2022-11-20 11:43:54,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:43:54,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:43:54,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:43:54,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:43:54,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:43:54,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:54" (1/1) ... [2022-11-20 11:43:54,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57665300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:54, skipping insertion in model container [2022-11-20 11:43:54,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:54" (1/1) ... [2022-11-20 11:43:54,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:43:54,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:43:54,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:43:54,926 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:43:54,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:43:55,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:43:55,051 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:43:55,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:43:55,166 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:43:55,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55 WrapperNode [2022-11-20 11:43:55,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:43:55,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:43:55,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:43:55,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:43:55,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,242 INFO L138 Inliner]: procedures = 117, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2022-11-20 11:43:55,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:43:55,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:43:55,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:43:55,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:43:55,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:43:55,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:43:55,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:43:55,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:43:55,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (1/1) ... [2022-11-20 11:43:55,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:43:55,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:43:55,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:43:55,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:43:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:43:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:43:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:43:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:43:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:43:55,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:43:55,530 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:43:55,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:43:55,955 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:43:55,962 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:43:55,963 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 11:43:55,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:55 BoogieIcfgContainer [2022-11-20 11:43:55,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:43:55,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:43:55,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:43:55,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:43:55,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:43:54" (1/3) ... [2022-11-20 11:43:55,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddfec02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:55, skipping insertion in model container [2022-11-20 11:43:55,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:55" (2/3) ... [2022-11-20 11:43:55,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddfec02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:55, skipping insertion in model container [2022-11-20 11:43:55,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:55" (3/3) ... [2022-11-20 11:43:55,977 INFO L112 eAbstractionObserver]: Analyzing ICFG java_BubbleSort-alloca-1.i [2022-11-20 11:43:56,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:43:56,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-20 11:43:56,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:43:56,085 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;@bda4f92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:43:56,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-20 11:43:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:43:56,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:56,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:43:56,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:43:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:56,114 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-11-20 11:43:56,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:43:56,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099383444] [2022-11-20 11:43:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:56,135 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 11:43:56,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:43:56,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:56,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:56,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:43:56,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:56,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:43:56,486 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 11:43:56,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:43:56,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:43:56,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099383444] [2022-11-20 11:43:56,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099383444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:56,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:56,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:43:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288384986] [2022-11-20 11:43:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:56,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:43:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:43:56,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:43:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:43:56,567 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.92) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:56,709 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-20 11:43:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:43:56,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:43:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:56,723 INFO L225 Difference]: With dead ends: 40 [2022-11-20 11:43:56,724 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 11:43:56,726 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 11:43:56,732 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:56,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:43:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 11:43:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-20 11:43:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.75) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-20 11:43:56,782 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 6 [2022-11-20 11:43:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:56,783 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-20 11:43:56,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-20 11:43:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:43:56,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:56,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:43:56,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 11:43:57,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:43:57,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:43:57,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:57,005 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-11-20 11:43:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:43:57,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757305872] [2022-11-20 11:43:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:57,007 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 11:43:57,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:43:57,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:57,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:57,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:43:57,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:57,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:43:57,169 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 11:43:57,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:43:57,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:43:57,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757305872] [2022-11-20 11:43:57,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757305872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:57,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:57,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:43:57,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730228537] [2022-11-20 11:43:57,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:57,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:43:57,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:43:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:43:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:43:57,174 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:57,456 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-11-20 11:43:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:43:57,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:43:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:57,459 INFO L225 Difference]: With dead ends: 77 [2022-11-20 11:43:57,459 INFO L226 Difference]: Without dead ends: 77 [2022-11-20 11:43:57,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:43:57,461 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 44 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:57,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 145 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:43:57,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-20 11:43:57,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2022-11-20 11:43:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-11-20 11:43:57,469 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2022-11-20 11:43:57,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:57,469 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-11-20 11:43:57,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-11-20 11:43:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:43:57,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:57,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:43:57,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:57,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:43:57,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:43:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-11-20 11:43:57,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:43:57,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10783829] [2022-11-20 11:43:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:57,688 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 11:43:57,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:43:57,689 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:57,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:57,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:43:57,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:57,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:43:57,967 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 11:43:57,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:43:57,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:43:57,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10783829] [2022-11-20 11:43:57,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10783829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:57,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:57,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:43:57,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659988264] [2022-11-20 11:43:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:57,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:43:57,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:43:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:43:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:43:57,972 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:58,037 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-11-20 11:43:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:43:58,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 11:43:58,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:58,042 INFO L225 Difference]: With dead ends: 43 [2022-11-20 11:43:58,042 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 11:43:58,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:43:58,044 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:58,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 94 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-11-20 11:43:58,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 11:43:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-11-20 11:43:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-20 11:43:58,050 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2022-11-20 11:43:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:58,053 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-20 11:43:58,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:58,054 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-20 11:43:58,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:43:58,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:58,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:58,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:58,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:43:58,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:43:58,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052082, now seen corresponding path program 1 times [2022-11-20 11:43:58,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:43:58,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409048988] [2022-11-20 11:43:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:58,271 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 11:43:58,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:43:58,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:58,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:58,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:43:58,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:58,425 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 11:43:58,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:43:58,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:43:58,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409048988] [2022-11-20 11:43:58,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409048988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:58,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:58,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:43:58,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080891778] [2022-11-20 11:43:58,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:58,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:43:58,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:43:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:43:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:43:58,431 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:58,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:58,485 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-11-20 11:43:58,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:43:58,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:43:58,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:58,489 INFO L225 Difference]: With dead ends: 44 [2022-11-20 11:43:58,489 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 11:43:58,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:43:58,493 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 45 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:58,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 68 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:43:58,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 11:43:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-11-20 11:43:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-11-20 11:43:58,506 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 9 [2022-11-20 11:43:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:58,507 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-11-20 11:43:58,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:58,507 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-11-20 11:43:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:43:58,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:58,531 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:58,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:58,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:43:58,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:43:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-11-20 11:43:58,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:43:58,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447883417] [2022-11-20 11:43:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:58,745 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 11:43:58,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:43:58,747 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:58,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:58,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:43:58,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:58,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:43:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:59,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:43:59,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447883417] [2022-11-20 11:43:59,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447883417] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:43:59,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:43:59,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:43:59,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488324684] [2022-11-20 11:43:59,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:43:59,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:43:59,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:43:59,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:43:59,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:43:59,014 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:59,121 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2022-11-20 11:43:59,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:43:59,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:43:59,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:59,123 INFO L225 Difference]: With dead ends: 75 [2022-11-20 11:43:59,123 INFO L226 Difference]: Without dead ends: 75 [2022-11-20 11:43:59,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:43:59,125 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 73 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:59,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 167 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:43:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-20 11:43:59,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 46. [2022-11-20 11:43:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.5625) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-11-20 11:43:59,133 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 10 [2022-11-20 11:43:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:59,134 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-11-20 11:43:59,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-11-20 11:43:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:43:59,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:59,135 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:59,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:59,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:43:59,354 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:43:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-11-20 11:43:59,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:43:59,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804147897] [2022-11-20 11:43:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:59,358 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 11:43:59,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:43:59,359 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:59,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:43:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:59,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:43:59,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:59,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:43:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:59,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:00,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:00,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804147897] [2022-11-20 11:44:00,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804147897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:00,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:00,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 11:44:00,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985487884] [2022-11-20 11:44:00,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:00,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:44:00,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:00,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:44:00,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:44:00,247 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:00,764 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2022-11-20 11:44:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:44:00,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:44:00,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:00,766 INFO L225 Difference]: With dead ends: 83 [2022-11-20 11:44:00,767 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 11:44:00,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:44:00,768 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 73 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:00,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 189 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 37 Unchecked, 0.4s Time] [2022-11-20 11:44:00,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 11:44:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 54. [2022-11-20 11:44:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.5) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2022-11-20 11:44:00,773 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 10 [2022-11-20 11:44:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:00,773 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2022-11-20 11:44:00,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:00,773 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2022-11-20 11:44:00,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:44:00,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:00,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:00,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:00,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:00,985 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:00,985 INFO L85 PathProgramCache]: Analyzing trace with hash 363893197, now seen corresponding path program 1 times [2022-11-20 11:44:00,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:00,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685886254] [2022-11-20 11:44:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:00,986 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 11:44:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:00,987 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:00,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:01,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:44:01,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:01,169 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_7| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_7|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_7| (_ bv0 1))))) is different from true [2022-11-20 11:44:01,170 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 11:44:01,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:01,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:01,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685886254] [2022-11-20 11:44:01,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685886254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:01,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:01,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:44:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540918868] [2022-11-20 11:44:01,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:01,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:44:01,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:01,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:44:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:44:01,173 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:01,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:01,230 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2022-11-20 11:44:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:44:01,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 11:44:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:01,234 INFO L225 Difference]: With dead ends: 61 [2022-11-20 11:44:01,235 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 11:44:01,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:44:01,236 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:01,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 77 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 61 Unchecked, 0.0s Time] [2022-11-20 11:44:01,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 11:44:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2022-11-20 11:44:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-11-20 11:44:01,241 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 13 [2022-11-20 11:44:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:01,242 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-11-20 11:44:01,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-11-20 11:44:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:44:01,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:01,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:01,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:01,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:01,460 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 363893999, now seen corresponding path program 1 times [2022-11-20 11:44:01,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:01,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141779716] [2022-11-20 11:44:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:01,461 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 11:44:01,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:01,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:01,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:01,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:44:01,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:01,570 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 11:44:01,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:01,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:01,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141779716] [2022-11-20 11:44:01,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141779716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:01,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:01,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:44:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650634556] [2022-11-20 11:44:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:01,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:44:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:44:01,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:44:01,573 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:01,623 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-11-20 11:44:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:44:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 11:44:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:01,625 INFO L225 Difference]: With dead ends: 59 [2022-11-20 11:44:01,625 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 11:44:01,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 11:44:01,626 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:01,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 106 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:44:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 11:44:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-20 11:44:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-20 11:44:01,629 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 13 [2022-11-20 11:44:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:01,629 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-20 11:44:01,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-20 11:44:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:44:01,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:01,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:01,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:01,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:01,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958577, now seen corresponding path program 1 times [2022-11-20 11:44:01,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:01,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390600763] [2022-11-20 11:44:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:01,832 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 11:44:01,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:01,833 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:01,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:01,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:44:01,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:01,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:44:01,960 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 11:44:01,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:01,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:01,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390600763] [2022-11-20 11:44:01,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390600763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:01,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:01,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:44:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103122093] [2022-11-20 11:44:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:01,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:44:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:44:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:44:01,963 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:02,126 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-11-20 11:44:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:44:02,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 11:44:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:02,127 INFO L225 Difference]: With dead ends: 45 [2022-11-20 11:44:02,128 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 11:44:02,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 11:44:02,128 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:02,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 25 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:44:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 11:44:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-20 11:44:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-11-20 11:44:02,132 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 13 [2022-11-20 11:44:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:02,132 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-11-20 11:44:02,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-11-20 11:44:02,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:44:02,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:02,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:02,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:02,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:02,351 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1064958578, now seen corresponding path program 1 times [2022-11-20 11:44:02,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:02,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281166391] [2022-11-20 11:44:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:02,352 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 11:44:02,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:02,353 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:02,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:44:02,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:02,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:02,850 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 11:44:02,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:03,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:03,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281166391] [2022-11-20 11:44:03,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281166391] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:44:03,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:44:03,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-20 11:44:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465154212] [2022-11-20 11:44:03,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:03,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:44:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:44:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:44:03,374 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:03,943 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-11-20 11:44:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:44:03,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 11:44:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:03,946 INFO L225 Difference]: With dead ends: 51 [2022-11-20 11:44:03,946 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 11:44:03,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:44:03,947 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 77 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:03,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 43 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:44:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 11:44:03,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2022-11-20 11:44:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2022-11-20 11:44:03,951 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 13 [2022-11-20 11:44:03,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:03,951 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2022-11-20 11:44:03,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-11-20 11:44:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:44:03,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:03,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:03,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:04,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:04,160 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1346022463, now seen corresponding path program 1 times [2022-11-20 11:44:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:04,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293932463] [2022-11-20 11:44:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:04,161 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 11:44:04,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:04,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:04,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:04,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:44:04,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:04,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:04,533 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 11:44:04,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:04,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:04,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293932463] [2022-11-20 11:44:04,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293932463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:04,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:04,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:44:04,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894301996] [2022-11-20 11:44:04,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:04,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:44:04,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:04,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:44:04,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:44:04,536 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 11:44:04,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:04,801 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2022-11-20 11:44:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:44:04,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 11:44:04,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:04,802 INFO L225 Difference]: With dead ends: 49 [2022-11-20 11:44:04,802 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 11:44:04,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:44:04,803 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:04,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2022-11-20 11:44:04,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 11:44:04,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-20 11:44:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-11-20 11:44:04,817 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 14 [2022-11-20 11:44:04,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:04,817 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-11-20 11:44:04,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 11:44:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-11-20 11:44:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:44:04,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:04,818 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:04,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:05,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:05,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:05,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:05,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1570446787, now seen corresponding path program 1 times [2022-11-20 11:44:05,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:05,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533576187] [2022-11-20 11:44:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:05,021 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 11:44:05,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:05,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:05,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:05,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:44:05,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:05,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:05,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:44:05,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:44:06,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:06,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533576187] [2022-11-20 11:44:06,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533576187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:06,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:06,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:44:06,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326793223] [2022-11-20 11:44:06,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:44:06,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:44:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:44:06,484 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:09,960 INFO L93 Difference]: Finished difference Result 143 states and 165 transitions. [2022-11-20 11:44:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:44:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 11:44:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:09,963 INFO L225 Difference]: With dead ends: 143 [2022-11-20 11:44:09,963 INFO L226 Difference]: Without dead ends: 143 [2022-11-20 11:44:09,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:44:09,965 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 503 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:09,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 141 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 226 Invalid, 0 Unknown, 35 Unchecked, 1.7s Time] [2022-11-20 11:44:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-20 11:44:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2022-11-20 11:44:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 109 states have (on average 1.3944954128440368) internal successors, (152), 114 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 152 transitions. [2022-11-20 11:44:09,974 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 152 transitions. Word has length 17 [2022-11-20 11:44:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:09,974 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 152 transitions. [2022-11-20 11:44:09,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 152 transitions. [2022-11-20 11:44:09,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:44:09,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:09,976 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-20 11:44:09,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:10,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:10,189 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:10,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2022-11-20 11:44:10,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:10,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189507600] [2022-11-20 11:44:10,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:44:10,190 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 11:44:10,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:10,191 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:10,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:10,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:44:10,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:44:10,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:44:10,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:10,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:10,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:11,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:11,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189507600] [2022-11-20 11:44:11,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189507600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:11,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:11,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:44:11,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903018094] [2022-11-20 11:44:11,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:11,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:44:11,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:11,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:44:11,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:44:11,777 INFO L87 Difference]: Start difference. First operand 115 states and 152 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:14,969 INFO L93 Difference]: Finished difference Result 611 states and 822 transitions. [2022-11-20 11:44:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:44:14,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:44:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:14,974 INFO L225 Difference]: With dead ends: 611 [2022-11-20 11:44:14,974 INFO L226 Difference]: Without dead ends: 611 [2022-11-20 11:44:14,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:44:14,976 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 474 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:14,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 240 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 283 Invalid, 0 Unknown, 12 Unchecked, 1.6s Time] [2022-11-20 11:44:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-20 11:44:14,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 131. [2022-11-20 11:44:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.376) internal successors, (172), 130 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 172 transitions. [2022-11-20 11:44:14,989 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 172 transitions. Word has length 18 [2022-11-20 11:44:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:14,990 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 172 transitions. [2022-11-20 11:44:14,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 172 transitions. [2022-11-20 11:44:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:44:14,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:14,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:15,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:15,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:15,204 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash -511718013, now seen corresponding path program 1 times [2022-11-20 11:44:15,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:15,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787268563] [2022-11-20 11:44:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:15,205 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 11:44:15,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:15,207 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:15,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:15,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:44:15,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:15,406 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 11:44:15,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:15,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:15,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787268563] [2022-11-20 11:44:15,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787268563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:15,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:15,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:44:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707628275] [2022-11-20 11:44:15,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:15,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:44:15,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:15,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:44:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:44:15,409 INFO L87 Difference]: Start difference. First operand 131 states and 172 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:15,658 INFO L93 Difference]: Finished difference Result 175 states and 221 transitions. [2022-11-20 11:44:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:44:15,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:44:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:15,661 INFO L225 Difference]: With dead ends: 175 [2022-11-20 11:44:15,661 INFO L226 Difference]: Without dead ends: 175 [2022-11-20 11:44:15,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:44:15,662 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 84 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:15,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 57 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:44:15,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-20 11:44:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 143. [2022-11-20 11:44:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 137 states have (on average 1.3503649635036497) internal successors, (185), 142 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 185 transitions. [2022-11-20 11:44:15,670 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 185 transitions. Word has length 18 [2022-11-20 11:44:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:15,670 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 185 transitions. [2022-11-20 11:44:15,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 185 transitions. [2022-11-20 11:44:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:44:15,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:15,671 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:15,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:15,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:15,884 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:15,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash -511225436, now seen corresponding path program 1 times [2022-11-20 11:44:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:15,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752562774] [2022-11-20 11:44:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:15,885 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 11:44:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:15,886 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:15,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:15,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:44:15,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:15,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:44:16,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:44:17,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:17,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752562774] [2022-11-20 11:44:17,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752562774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:17,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:17,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-11-20 11:44:17,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421140873] [2022-11-20 11:44:17,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:44:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:44:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:44:17,177 INFO L87 Difference]: Start difference. First operand 143 states and 185 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:18,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:18,699 INFO L93 Difference]: Finished difference Result 162 states and 209 transitions. [2022-11-20 11:44:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:44:18,699 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:44:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:18,701 INFO L225 Difference]: With dead ends: 162 [2022-11-20 11:44:18,701 INFO L226 Difference]: Without dead ends: 162 [2022-11-20 11:44:18,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:44:18,702 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:18,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 131 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2022-11-20 11:44:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-20 11:44:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 151. [2022-11-20 11:44:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.356164383561644) internal successors, (198), 150 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2022-11-20 11:44:18,709 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 18 [2022-11-20 11:44:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:18,710 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2022-11-20 11:44:18,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2022-11-20 11:44:18,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:44:18,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:18,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:18,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-20 11:44:18,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:18,923 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:18,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1331880655, now seen corresponding path program 1 times [2022-11-20 11:44:18,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:18,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301082370] [2022-11-20 11:44:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:18,923 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 11:44:18,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:18,924 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:18,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:19,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:44:19,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:19,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:19,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:20,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:20,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301082370] [2022-11-20 11:44:20,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301082370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:20,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:20,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2022-11-20 11:44:20,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630012987] [2022-11-20 11:44:20,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:44:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:20,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:44:20,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:44:20,622 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:21,241 INFO L93 Difference]: Finished difference Result 155 states and 200 transitions. [2022-11-20 11:44:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:44:21,243 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:44:21,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:21,244 INFO L225 Difference]: With dead ends: 155 [2022-11-20 11:44:21,244 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 11:44:21,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:44:21,245 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:21,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 127 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 36 Unchecked, 0.4s Time] [2022-11-20 11:44:21,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 11:44:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123. [2022-11-20 11:44:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 122 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 158 transitions. [2022-11-20 11:44:21,251 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 158 transitions. Word has length 19 [2022-11-20 11:44:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:21,251 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 158 transitions. [2022-11-20 11:44:21,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 158 transitions. [2022-11-20 11:44:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 11:44:21,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:21,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:21,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:21,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:21,464 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1149452832, now seen corresponding path program 1 times [2022-11-20 11:44:21,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:21,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176218124] [2022-11-20 11:44:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:21,465 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 11:44:21,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:21,466 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:21,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:21,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:44:21,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:21,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:44:22,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:44:22,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:22,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176218124] [2022-11-20 11:44:22,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176218124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:22,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:22,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-11-20 11:44:22,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122258935] [2022-11-20 11:44:22,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:22,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:44:22,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:22,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:44:22,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:44:22,692 INFO L87 Difference]: Start difference. First operand 123 states and 158 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:23,018 INFO L93 Difference]: Finished difference Result 173 states and 225 transitions. [2022-11-20 11:44:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:44:23,018 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 21 [2022-11-20 11:44:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:23,019 INFO L225 Difference]: With dead ends: 173 [2022-11-20 11:44:23,020 INFO L226 Difference]: Without dead ends: 173 [2022-11-20 11:44:23,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:44:23,021 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:23,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 164 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 59 Unchecked, 0.2s Time] [2022-11-20 11:44:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-20 11:44:23,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 153. [2022-11-20 11:44:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 149 states have (on average 1.3758389261744965) internal successors, (205), 152 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 205 transitions. [2022-11-20 11:44:23,027 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 205 transitions. Word has length 21 [2022-11-20 11:44:23,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:23,028 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 205 transitions. [2022-11-20 11:44:23,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:23,028 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 205 transitions. [2022-11-20 11:44:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 11:44:23,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:23,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:23,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:23,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:23,241 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:23,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1273299411, now seen corresponding path program 1 times [2022-11-20 11:44:23,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:23,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33013863] [2022-11-20 11:44:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:23,242 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 11:44:23,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:23,243 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:23,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:23,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:44:23,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:23,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:44:23,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:44:24,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:24,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33013863] [2022-11-20 11:44:24,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33013863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:24,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:24,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2022-11-20 11:44:24,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950653928] [2022-11-20 11:44:24,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:24,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:44:24,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:24,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:44:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:44:24,966 INFO L87 Difference]: Start difference. First operand 153 states and 205 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:25,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:25,757 INFO L93 Difference]: Finished difference Result 171 states and 225 transitions. [2022-11-20 11:44:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:44:25,759 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 11:44:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:25,760 INFO L225 Difference]: With dead ends: 171 [2022-11-20 11:44:25,761 INFO L226 Difference]: Without dead ends: 167 [2022-11-20 11:44:25,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:44:25,762 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 50 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:25,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 126 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 24 Unchecked, 0.6s Time] [2022-11-20 11:44:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-20 11:44:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-11-20 11:44:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 163 states have (on average 1.3496932515337423) internal successors, (220), 166 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 220 transitions. [2022-11-20 11:44:25,767 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 220 transitions. Word has length 22 [2022-11-20 11:44:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:25,768 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 220 transitions. [2022-11-20 11:44:25,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 220 transitions. [2022-11-20 11:44:25,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:44:25,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:25,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:25,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:25,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:25,981 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:25,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1637861780, now seen corresponding path program 2 times [2022-11-20 11:44:25,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:25,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408083897] [2022-11-20 11:44:25,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:44:25,983 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 11:44:25,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:25,984 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:25,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:26,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:44:26,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:44:26,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:44:26,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:26,083 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:44:26,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:44:28,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:28,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408083897] [2022-11-20 11:44:28,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408083897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:28,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:28,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2022-11-20 11:44:28,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163134886] [2022-11-20 11:44:28,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:28,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:44:28,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:28,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:44:28,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:44:28,387 INFO L87 Difference]: Start difference. First operand 167 states and 220 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:31,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:31,338 INFO L93 Difference]: Finished difference Result 196 states and 255 transitions. [2022-11-20 11:44:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:44:31,339 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 11:44:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:31,340 INFO L225 Difference]: With dead ends: 196 [2022-11-20 11:44:31,341 INFO L226 Difference]: Without dead ends: 193 [2022-11-20 11:44:31,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:44:31,342 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 111 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:31,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 150 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 219 Invalid, 0 Unknown, 25 Unchecked, 1.4s Time] [2022-11-20 11:44:31,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-20 11:44:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 162. [2022-11-20 11:44:31,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 158 states have (on average 1.3417721518987342) internal successors, (212), 161 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 212 transitions. [2022-11-20 11:44:31,348 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 212 transitions. Word has length 23 [2022-11-20 11:44:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:31,348 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 212 transitions. [2022-11-20 11:44:31,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 212 transitions. [2022-11-20 11:44:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 11:44:31,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:31,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:31,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:31,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:31,561 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:31,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:31,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2028106434, now seen corresponding path program 1 times [2022-11-20 11:44:31,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:31,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814691200] [2022-11-20 11:44:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:31,562 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 11:44:31,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:31,563 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:31,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:31,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:44:31,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:31,798 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_16| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_16|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_16| (_ bv0 1))))) is different from true [2022-11-20 11:44:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:44:31,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:31,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:31,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814691200] [2022-11-20 11:44:31,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814691200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:31,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:31,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:44:31,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269953942] [2022-11-20 11:44:31,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:31,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:44:31,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:31,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:44:31,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:44:31,801 INFO L87 Difference]: Start difference. First operand 162 states and 212 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:31,828 INFO L93 Difference]: Finished difference Result 210 states and 279 transitions. [2022-11-20 11:44:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:44:31,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 11:44:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:31,830 INFO L225 Difference]: With dead ends: 210 [2022-11-20 11:44:31,830 INFO L226 Difference]: Without dead ends: 208 [2022-11-20 11:44:31,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:44:31,831 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:31,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2022-11-20 11:44:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-20 11:44:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2022-11-20 11:44:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.3434343434343434) internal successors, (266), 201 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 266 transitions. [2022-11-20 11:44:31,838 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 266 transitions. Word has length 25 [2022-11-20 11:44:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:31,839 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 266 transitions. [2022-11-20 11:44:31,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 266 transitions. [2022-11-20 11:44:31,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 11:44:31,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:31,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:31,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:32,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:32,052 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:32,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:32,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1774535125, now seen corresponding path program 1 times [2022-11-20 11:44:32,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:32,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469908632] [2022-11-20 11:44:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:32,053 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 11:44:32,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:32,054 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:32,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:32,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:44:32,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:32,399 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc9#1.base_17| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_17|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc9#1.base_17| (_ bv0 1))))) is different from true [2022-11-20 11:44:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:44:32,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:32,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:32,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469908632] [2022-11-20 11:44:32,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469908632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:32,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:32,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:44:32,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159956271] [2022-11-20 11:44:32,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:32,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:44:32,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:32,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:44:32,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:44:32,402 INFO L87 Difference]: Start difference. First operand 202 states and 266 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:32,410 INFO L93 Difference]: Finished difference Result 201 states and 265 transitions. [2022-11-20 11:44:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:44:32,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-20 11:44:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:32,412 INFO L225 Difference]: With dead ends: 201 [2022-11-20 11:44:32,412 INFO L226 Difference]: Without dead ends: 199 [2022-11-20 11:44:32,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-20 11:44:32,413 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:32,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 40 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-11-20 11:44:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-20 11:44:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 159. [2022-11-20 11:44:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 156 states have (on average 1.294871794871795) internal successors, (202), 158 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 202 transitions. [2022-11-20 11:44:32,420 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 202 transitions. Word has length 31 [2022-11-20 11:44:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:32,420 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 202 transitions. [2022-11-20 11:44:32,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 202 transitions. [2022-11-20 11:44:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 11:44:32,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:32,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:32,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:32,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:32,645 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:32,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1949567358, now seen corresponding path program 2 times [2022-11-20 11:44:32,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:32,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335173989] [2022-11-20 11:44:32,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:44:32,646 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 11:44:32,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:32,647 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:32,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:32,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:44:32,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:44:32,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:44:32,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:32,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:44:33,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:44:35,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:35,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335173989] [2022-11-20 11:44:35,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335173989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:35,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:35,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 11:44:35,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646896751] [2022-11-20 11:44:35,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:35,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:44:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:35,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:44:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:44:35,022 INFO L87 Difference]: Start difference. First operand 159 states and 202 transitions. Second operand has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:46,833 INFO L93 Difference]: Finished difference Result 286 states and 355 transitions. [2022-11-20 11:44:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 11:44:46,843 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-20 11:44:46,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:46,845 INFO L225 Difference]: With dead ends: 286 [2022-11-20 11:44:46,845 INFO L226 Difference]: Without dead ends: 286 [2022-11-20 11:44:46,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=701, Invalid=2055, Unknown=0, NotChecked=0, Total=2756 [2022-11-20 11:44:46,847 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 526 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:46,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 128 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 313 Invalid, 0 Unknown, 41 Unchecked, 2.6s Time] [2022-11-20 11:44:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-20 11:44:46,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 193. [2022-11-20 11:44:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.2947368421052632) internal successors, (246), 192 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 246 transitions. [2022-11-20 11:44:46,853 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 246 transitions. Word has length 31 [2022-11-20 11:44:46,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:46,854 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 246 transitions. [2022-11-20 11:44:46,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 18 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:46,854 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 246 transitions. [2022-11-20 11:44:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 11:44:46,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:46,855 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:46,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:47,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:47,073 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash 740071271, now seen corresponding path program 2 times [2022-11-20 11:44:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:47,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318053141] [2022-11-20 11:44:47,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:44:47,074 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 11:44:47,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:47,076 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:47,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:47,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:44:47,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:44:47,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:44:47,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:47,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:44:48,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:44:49,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:49,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318053141] [2022-11-20 11:44:49,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318053141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:49,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:49,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2022-11-20 11:44:49,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500239063] [2022-11-20 11:44:49,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:49,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:44:49,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:44:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:44:49,205 INFO L87 Difference]: Start difference. First operand 193 states and 246 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:51,222 INFO L93 Difference]: Finished difference Result 233 states and 298 transitions. [2022-11-20 11:44:51,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:44:51,224 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-20 11:44:51,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:51,225 INFO L225 Difference]: With dead ends: 233 [2022-11-20 11:44:51,225 INFO L226 Difference]: Without dead ends: 233 [2022-11-20 11:44:51,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:44:51,227 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:51,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 149 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 26 Unchecked, 0.3s Time] [2022-11-20 11:44:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-20 11:44:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 213. [2022-11-20 11:44:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.319047619047619) internal successors, (277), 212 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 277 transitions. [2022-11-20 11:44:51,235 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 277 transitions. Word has length 32 [2022-11-20 11:44:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:51,236 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 277 transitions. [2022-11-20 11:44:51,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 17 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 277 transitions. [2022-11-20 11:44:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:44:51,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:51,238 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:51,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:51,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:51,439 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1154994598, now seen corresponding path program 1 times [2022-11-20 11:44:51,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:51,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66311803] [2022-11-20 11:44:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:51,440 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 11:44:51,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:51,442 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:51,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:51,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:44:51,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:51,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:44:52,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:44:53,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:53,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66311803] [2022-11-20 11:44:53,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66311803] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:53,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:53,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2022-11-20 11:44:53,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422132380] [2022-11-20 11:44:53,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:53,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:44:53,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:44:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:44:53,618 INFO L87 Difference]: Start difference. First operand 213 states and 277 transitions. Second operand has 17 states, 16 states have (on average 3.5) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:54,430 INFO L93 Difference]: Finished difference Result 233 states and 302 transitions. [2022-11-20 11:44:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:44:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-20 11:44:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:54,433 INFO L225 Difference]: With dead ends: 233 [2022-11-20 11:44:54,433 INFO L226 Difference]: Without dead ends: 233 [2022-11-20 11:44:54,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:44:54,434 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:54,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 118 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-20 11:44:54,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-20 11:44:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 221. [2022-11-20 11:44:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 218 states have (on average 1.3073394495412844) internal successors, (285), 220 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 285 transitions. [2022-11-20 11:44:54,442 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 285 transitions. Word has length 33 [2022-11-20 11:44:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:54,442 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 285 transitions. [2022-11-20 11:44:54,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 285 transitions. [2022-11-20 11:44:54,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:44:54,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:54,443 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:54,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:54,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:54,660 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1467372908, now seen corresponding path program 3 times [2022-11-20 11:44:54,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:54,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531942469] [2022-11-20 11:44:54,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:44:54,661 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 11:44:54,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:54,663 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:54,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:54,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:44:54,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:44:54,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:44:54,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:54,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:55,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:56,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:44:56,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531942469] [2022-11-20 11:44:56,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531942469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:56,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:56,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-20 11:44:56,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752950888] [2022-11-20 11:44:56,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:56,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:44:56,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:44:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:44:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:44:56,290 INFO L87 Difference]: Start difference. First operand 221 states and 285 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:56,952 INFO L93 Difference]: Finished difference Result 249 states and 317 transitions. [2022-11-20 11:44:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:44:56,953 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-20 11:44:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:56,955 INFO L225 Difference]: With dead ends: 249 [2022-11-20 11:44:56,955 INFO L226 Difference]: Without dead ends: 245 [2022-11-20 11:44:56,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:44:56,956 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 64 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:56,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 122 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 28 Unchecked, 0.4s Time] [2022-11-20 11:44:56,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-20 11:44:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2022-11-20 11:44:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 239 states have (on average 1.297071129707113) internal successors, (310), 241 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 310 transitions. [2022-11-20 11:44:56,963 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 310 transitions. Word has length 33 [2022-11-20 11:44:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:56,963 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 310 transitions. [2022-11-20 11:44:56,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 310 transitions. [2022-11-20 11:44:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 11:44:56,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:56,965 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2022-11-20 11:44:56,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:57,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:44:57,181 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:44:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2022-11-20 11:44:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:44:57,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588404437] [2022-11-20 11:44:57,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:44:57,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:44:57,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:44:57,182 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:57,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:44:57,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-20 11:44:57,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:44:57,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:44:57,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:57,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:44:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:58,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:00,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:00,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588404437] [2022-11-20 11:45:00,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588404437] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:00,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:45:00,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 11:45:00,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099075320] [2022-11-20 11:45:00,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:00,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:45:00,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:00,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:45:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:45:00,382 INFO L87 Difference]: Start difference. First operand 242 states and 310 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:11,715 INFO L93 Difference]: Finished difference Result 2454 states and 3204 transitions. [2022-11-20 11:45:11,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:45:11,717 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-20 11:45:11,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:11,725 INFO L225 Difference]: With dead ends: 2454 [2022-11-20 11:45:11,725 INFO L226 Difference]: Without dead ends: 2454 [2022-11-20 11:45:11,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=522, Invalid=1200, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 11:45:11,727 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 984 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:11,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 608 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 818 Invalid, 0 Unknown, 31 Unchecked, 4.2s Time] [2022-11-20 11:45:11,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2022-11-20 11:45:11,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 274. [2022-11-20 11:45:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 271 states have (on average 1.2915129151291513) internal successors, (350), 273 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 350 transitions. [2022-11-20 11:45:11,763 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 350 transitions. Word has length 34 [2022-11-20 11:45:11,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:11,763 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 350 transitions. [2022-11-20 11:45:11,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:11,764 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 350 transitions. [2022-11-20 11:45:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 11:45:11,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:11,765 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:11,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-20 11:45:11,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:11,978 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1311508640, now seen corresponding path program 3 times [2022-11-20 11:45:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:11,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455136427] [2022-11-20 11:45:11,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:45:11,979 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 11:45:11,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:11,980 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:11,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:12,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:45:12,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:12,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:45:12,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:12,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:45:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:45:12,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:45:13,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:13,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455136427] [2022-11-20 11:45:13,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455136427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:13,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:45:13,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-20 11:45:13,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204613736] [2022-11-20 11:45:13,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:13,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:45:13,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:13,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:45:13,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:45:13,348 INFO L87 Difference]: Start difference. First operand 274 states and 350 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:14,291 INFO L93 Difference]: Finished difference Result 345 states and 445 transitions. [2022-11-20 11:45:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:45:14,293 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-20 11:45:14,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:14,294 INFO L225 Difference]: With dead ends: 345 [2022-11-20 11:45:14,294 INFO L226 Difference]: Without dead ends: 345 [2022-11-20 11:45:14,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:45:14,295 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:14,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 103 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 42 Unchecked, 0.3s Time] [2022-11-20 11:45:14,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-20 11:45:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 333. [2022-11-20 11:45:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 330 states have (on average 1.3181818181818181) internal successors, (435), 332 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 435 transitions. [2022-11-20 11:45:14,304 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 435 transitions. Word has length 34 [2022-11-20 11:45:14,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:14,305 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 435 transitions. [2022-11-20 11:45:14,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 435 transitions. [2022-11-20 11:45:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 11:45:14,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:14,306 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:14,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:14,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:14,522 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:14,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1721521442, now seen corresponding path program 1 times [2022-11-20 11:45:14,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:14,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913480245] [2022-11-20 11:45:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:14,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:45:14,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:14,525 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:14,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:14,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:45:14,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:14,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:45:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:45:15,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:45:16,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:16,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913480245] [2022-11-20 11:45:16,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913480245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:16,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:45:16,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2022-11-20 11:45:16,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225601684] [2022-11-20 11:45:16,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:16,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:45:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:45:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:45:16,414 INFO L87 Difference]: Start difference. First operand 333 states and 435 transitions. Second operand has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:17,350 INFO L93 Difference]: Finished difference Result 489 states and 630 transitions. [2022-11-20 11:45:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:45:17,350 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 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 36 [2022-11-20 11:45:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:17,353 INFO L225 Difference]: With dead ends: 489 [2022-11-20 11:45:17,353 INFO L226 Difference]: Without dead ends: 489 [2022-11-20 11:45:17,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:45:17,354 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:17,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 177 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2022-11-20 11:45:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-20 11:45:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 419. [2022-11-20 11:45:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 416 states have (on average 1.3052884615384615) internal successors, (543), 418 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 543 transitions. [2022-11-20 11:45:17,363 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 543 transitions. Word has length 36 [2022-11-20 11:45:17,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:17,364 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 543 transitions. [2022-11-20 11:45:17,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 543 transitions. [2022-11-20 11:45:17,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 11:45:17,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:17,365 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:17,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:17,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:17,578 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:17,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:17,578 INFO L85 PathProgramCache]: Analyzing trace with hash -710345958, now seen corresponding path program 2 times [2022-11-20 11:45:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:17,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083701752] [2022-11-20 11:45:17,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:45:17,579 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 11:45:17,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:17,580 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:17,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:17,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:45:17,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:17,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:45:17,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:17,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:45:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:45:18,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:19,431 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:45:19,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:19,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083701752] [2022-11-20 11:45:19,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083701752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:19,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:45:19,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2022-11-20 11:45:19,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184689661] [2022-11-20 11:45:19,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:19,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:45:19,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:19,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:45:19,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:45:19,433 INFO L87 Difference]: Start difference. First operand 419 states and 543 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:20,051 INFO L93 Difference]: Finished difference Result 480 states and 612 transitions. [2022-11-20 11:45:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:45:20,052 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-20 11:45:20,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:20,054 INFO L225 Difference]: With dead ends: 480 [2022-11-20 11:45:20,054 INFO L226 Difference]: Without dead ends: 480 [2022-11-20 11:45:20,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:45:20,055 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:20,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 149 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 54 Unchecked, 0.3s Time] [2022-11-20 11:45:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-20 11:45:20,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 418. [2022-11-20 11:45:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 415 states have (on average 1.3036144578313253) internal successors, (541), 417 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 541 transitions. [2022-11-20 11:45:20,064 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 541 transitions. Word has length 39 [2022-11-20 11:45:20,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:20,065 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 541 transitions. [2022-11-20 11:45:20,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:20,065 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 541 transitions. [2022-11-20 11:45:20,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 11:45:20,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:20,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:20,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:20,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:20,281 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:20,281 INFO L85 PathProgramCache]: Analyzing trace with hash 898073347, now seen corresponding path program 1 times [2022-11-20 11:45:20,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:20,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136039225] [2022-11-20 11:45:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:20,282 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 11:45:20,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:20,283 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:20,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:20,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:45:20,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:20,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:45:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:21,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:23,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:23,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136039225] [2022-11-20 11:45:23,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136039225] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:23,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:45:23,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2022-11-20 11:45:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056636905] [2022-11-20 11:45:23,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:23,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:45:23,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:23,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:45:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:45:23,822 INFO L87 Difference]: Start difference. First operand 418 states and 541 transitions. Second operand has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:24,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:24,578 INFO L93 Difference]: Finished difference Result 451 states and 579 transitions. [2022-11-20 11:45:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:45:24,580 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-20 11:45:24,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:24,582 INFO L225 Difference]: With dead ends: 451 [2022-11-20 11:45:24,582 INFO L226 Difference]: Without dead ends: 449 [2022-11-20 11:45:24,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:45:24,583 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 76 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:24,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 146 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-20 11:45:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-20 11:45:24,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 442. [2022-11-20 11:45:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 439 states have (on average 1.296127562642369) internal successors, (569), 441 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 569 transitions. [2022-11-20 11:45:24,592 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 569 transitions. Word has length 39 [2022-11-20 11:45:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:24,593 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 569 transitions. [2022-11-20 11:45:24,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 569 transitions. [2022-11-20 11:45:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:45:24,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:24,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:24,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 11:45:24,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:24,807 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:24,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1779925847, now seen corresponding path program 1 times [2022-11-20 11:45:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:24,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589109259] [2022-11-20 11:45:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:24,808 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 11:45:24,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:24,809 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:24,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:24,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:45:24,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:24,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:45:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:45:25,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:45:26,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:26,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589109259] [2022-11-20 11:45:26,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589109259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:26,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:45:26,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2022-11-20 11:45:26,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991272944] [2022-11-20 11:45:26,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:26,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:45:26,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:45:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:45:26,551 INFO L87 Difference]: Start difference. First operand 442 states and 569 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:28,204 INFO L93 Difference]: Finished difference Result 691 states and 889 transitions. [2022-11-20 11:45:28,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:45:28,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-20 11:45:28,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:28,207 INFO L225 Difference]: With dead ends: 691 [2022-11-20 11:45:28,207 INFO L226 Difference]: Without dead ends: 691 [2022-11-20 11:45:28,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:45:28,208 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:28,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 108 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-20 11:45:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-20 11:45:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 543. [2022-11-20 11:45:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 540 states have (on average 1.2925925925925925) internal successors, (698), 542 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 698 transitions. [2022-11-20 11:45:28,221 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 698 transitions. Word has length 40 [2022-11-20 11:45:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:28,221 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 698 transitions. [2022-11-20 11:45:28,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 698 transitions. [2022-11-20 11:45:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:45:28,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:28,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:28,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:28,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:28,437 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:28,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:28,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1948853463, now seen corresponding path program 2 times [2022-11-20 11:45:28,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:28,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432255503] [2022-11-20 11:45:28,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:45:28,438 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 11:45:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:28,439 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:28,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:28,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:45:28,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:28,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:45:28,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:28,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:45:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:45:29,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:45:30,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:30,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432255503] [2022-11-20 11:45:30,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432255503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:30,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:45:30,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:45:30,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384541250] [2022-11-20 11:45:30,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:30,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:45:30,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:30,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:45:30,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:45:30,140 INFO L87 Difference]: Start difference. First operand 543 states and 698 transitions. Second operand has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:30,314 INFO L93 Difference]: Finished difference Result 570 states and 725 transitions. [2022-11-20 11:45:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:45:30,314 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-20 11:45:30,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:30,316 INFO L225 Difference]: With dead ends: 570 [2022-11-20 11:45:30,316 INFO L226 Difference]: Without dead ends: 570 [2022-11-20 11:45:30,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:45:30,317 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:30,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 77 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2022-11-20 11:45:30,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-11-20 11:45:30,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 443. [2022-11-20 11:45:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 440 states have (on average 1.290909090909091) internal successors, (568), 442 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 568 transitions. [2022-11-20 11:45:30,327 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 568 transitions. Word has length 40 [2022-11-20 11:45:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:30,328 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 568 transitions. [2022-11-20 11:45:30,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 568 transitions. [2022-11-20 11:45:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:45:30,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:30,329 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:30,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:30,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:30,543 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash -384821099, now seen corresponding path program 3 times [2022-11-20 11:45:30,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:30,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909641491] [2022-11-20 11:45:30,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:45:30,544 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 11:45:30,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:30,545 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:30,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:30,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:45:30,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:30,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:45:30,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:30,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:45:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 11:45:31,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:45:31,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:31,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909641491] [2022-11-20 11:45:31,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909641491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:31,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:31,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:45:31,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624911412] [2022-11-20 11:45:31,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:31,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:45:31,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:31,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:45:31,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:45:31,941 INFO L87 Difference]: Start difference. First operand 443 states and 568 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:31,977 INFO L93 Difference]: Finished difference Result 450 states and 571 transitions. [2022-11-20 11:45:31,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:45:31,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 40 [2022-11-20 11:45:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:31,979 INFO L225 Difference]: With dead ends: 450 [2022-11-20 11:45:31,979 INFO L226 Difference]: Without dead ends: 450 [2022-11-20 11:45:31,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:45:31,980 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:31,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 67 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 31 Unchecked, 0.0s Time] [2022-11-20 11:45:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-20 11:45:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 378. [2022-11-20 11:45:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 375 states have (on average 1.2613333333333334) internal successors, (473), 377 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 473 transitions. [2022-11-20 11:45:31,988 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 473 transitions. Word has length 40 [2022-11-20 11:45:31,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:31,988 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 473 transitions. [2022-11-20 11:45:31,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:31,989 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 473 transitions. [2022-11-20 11:45:31,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:45:31,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:31,990 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:32,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:32,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:32,202 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:32,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash 799217830, now seen corresponding path program 4 times [2022-11-20 11:45:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:32,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774822448] [2022-11-20 11:45:32,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:45:32,203 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 11:45:32,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:32,204 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:32,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:32,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:45:32,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:32,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:45:32,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:32,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:45:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:45:33,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:45:36,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:36,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774822448] [2022-11-20 11:45:36,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774822448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:36,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:45:36,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 11:45:36,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555372592] [2022-11-20 11:45:36,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:36,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:45:36,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:36,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:45:36,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:45:36,541 INFO L87 Difference]: Start difference. First operand 378 states and 473 transitions. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:51,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:45:51,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:51,945 INFO L93 Difference]: Finished difference Result 661 states and 812 transitions. [2022-11-20 11:45:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:45:51,946 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-20 11:45:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:51,948 INFO L225 Difference]: With dead ends: 661 [2022-11-20 11:45:51,948 INFO L226 Difference]: Without dead ends: 661 [2022-11-20 11:45:51,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=645, Invalid=1805, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 11:45:51,949 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 453 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:51,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 224 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 521 Invalid, 1 Unknown, 138 Unchecked, 6.9s Time] [2022-11-20 11:45:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-11-20 11:45:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 543. [2022-11-20 11:45:51,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 540 states have (on average 1.2481481481481482) internal successors, (674), 542 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 674 transitions. [2022-11-20 11:45:51,960 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 674 transitions. Word has length 41 [2022-11-20 11:45:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:51,961 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 674 transitions. [2022-11-20 11:45:51,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 674 transitions. [2022-11-20 11:45:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:45:51,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:51,962 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:51,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:52,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:52,177 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:52,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:52,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1584858296, now seen corresponding path program 2 times [2022-11-20 11:45:52,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:52,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004038819] [2022-11-20 11:45:52,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:45:52,178 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 11:45:52,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:52,179 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:52,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:52,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:45:52,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:52,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:45:52,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:52,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:45:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:45:55,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:45:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:45:56,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:45:56,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004038819] [2022-11-20 11:45:56,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004038819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:45:56,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:45:56,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2022-11-20 11:45:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899066872] [2022-11-20 11:45:56,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:45:56,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:45:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:45:56,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:45:56,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:45:56,694 INFO L87 Difference]: Start difference. First operand 543 states and 674 transitions. Second operand has 19 states, 18 states have (on average 4.0) internal successors, (72), 19 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:59,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:59,129 INFO L93 Difference]: Finished difference Result 1102 states and 1398 transitions. [2022-11-20 11:45:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:45:59,130 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 19 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-20 11:45:59,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:59,132 INFO L225 Difference]: With dead ends: 1102 [2022-11-20 11:45:59,132 INFO L226 Difference]: Without dead ends: 1102 [2022-11-20 11:45:59,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:45:59,133 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:59,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 153 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 37 Unchecked, 0.2s Time] [2022-11-20 11:45:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-11-20 11:45:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1019. [2022-11-20 11:45:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1016 states have (on average 1.2785433070866141) internal successors, (1299), 1018 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1299 transitions. [2022-11-20 11:45:59,153 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1299 transitions. Word has length 41 [2022-11-20 11:45:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:59,153 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1299 transitions. [2022-11-20 11:45:59,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 19 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1299 transitions. [2022-11-20 11:45:59,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:45:59,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:59,155 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:59,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-20 11:45:59,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:45:59,370 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:45:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash 643069496, now seen corresponding path program 3 times [2022-11-20 11:45:59,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:45:59,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841140824] [2022-11-20 11:45:59,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:45:59,371 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 11:45:59,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:45:59,371 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:59,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:45:59,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:45:59,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:45:59,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:45:59,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:45:59,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:46:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:46:00,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:46:00,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:46:00,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841140824] [2022-11-20 11:46:00,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841140824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:00,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:00,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:46:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202098330] [2022-11-20 11:46:00,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:00,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:46:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:46:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:46:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:46:00,498 INFO L87 Difference]: Start difference. First operand 1019 states and 1299 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:00,528 INFO L93 Difference]: Finished difference Result 1050 states and 1329 transitions. [2022-11-20 11:46:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:46:00,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-20 11:46:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:00,532 INFO L225 Difference]: With dead ends: 1050 [2022-11-20 11:46:00,532 INFO L226 Difference]: Without dead ends: 1050 [2022-11-20 11:46:00,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:46:00,533 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:00,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 58 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-11-20 11:46:00,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-11-20 11:46:00,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 259. [2022-11-20 11:46:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 257 states have (on average 1.1945525291828794) internal successors, (307), 258 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 307 transitions. [2022-11-20 11:46:00,545 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 307 transitions. Word has length 41 [2022-11-20 11:46:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:00,546 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 307 transitions. [2022-11-20 11:46:00,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 307 transitions. [2022-11-20 11:46:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:46:00,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:00,547 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:00,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:00,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:46:00,760 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:46:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:00,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1731491168, now seen corresponding path program 4 times [2022-11-20 11:46:00,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:46:00,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795830758] [2022-11-20 11:46:00,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:46:00,761 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 11:46:00,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:46:00,762 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:00,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:00,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:46:00,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:46:00,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:46:00,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:00,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:46:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:46:01,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:46:05,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:46:05,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795830758] [2022-11-20 11:46:05,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795830758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:05,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:46:05,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2022-11-20 11:46:05,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181213766] [2022-11-20 11:46:05,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:05,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:46:05,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:46:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:46:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:46:05,409 INFO L87 Difference]: Start difference. First operand 259 states and 307 transitions. Second operand has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:07,173 INFO L93 Difference]: Finished difference Result 311 states and 366 transitions. [2022-11-20 11:46:07,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:46:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-20 11:46:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:07,177 INFO L225 Difference]: With dead ends: 311 [2022-11-20 11:46:07,177 INFO L226 Difference]: Without dead ends: 307 [2022-11-20 11:46:07,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:46:07,178 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 43 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:07,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 185 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 184 Invalid, 0 Unknown, 31 Unchecked, 1.0s Time] [2022-11-20 11:46:07,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-20 11:46:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 290. [2022-11-20 11:46:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 288 states have (on average 1.1979166666666667) internal successors, (345), 289 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 345 transitions. [2022-11-20 11:46:07,184 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 345 transitions. Word has length 44 [2022-11-20 11:46:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:07,184 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 345 transitions. [2022-11-20 11:46:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.25) internal successors, (78), 24 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 345 transitions. [2022-11-20 11:46:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:46:07,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:07,185 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:07,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 11:46:07,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:46:07,400 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:46:07,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:07,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1559263408, now seen corresponding path program 5 times [2022-11-20 11:46:07,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:46:07,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146796299] [2022-11-20 11:46:07,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:46:07,401 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 11:46:07,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:46:07,402 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:07,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:07,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-20 11:46:07,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:46:07,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:46:07,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:46:07,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:46:08,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:46:08,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146796299] [2022-11-20 11:46:08,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146796299] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:08,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:46:08,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 11:46:08,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791671710] [2022-11-20 11:46:08,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:08,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:46:08,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:46:08,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:46:08,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:46:08,483 INFO L87 Difference]: Start difference. First operand 290 states and 345 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:09,188 INFO L93 Difference]: Finished difference Result 324 states and 374 transitions. [2022-11-20 11:46:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:46:09,190 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-20 11:46:09,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:09,191 INFO L225 Difference]: With dead ends: 324 [2022-11-20 11:46:09,191 INFO L226 Difference]: Without dead ends: 298 [2022-11-20 11:46:09,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:46:09,192 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:09,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 98 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:46:09,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-20 11:46:09,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 265. [2022-11-20 11:46:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 263 states have (on average 1.1749049429657794) internal successors, (309), 264 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:09,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 309 transitions. [2022-11-20 11:46:09,197 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 309 transitions. Word has length 45 [2022-11-20 11:46:09,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:09,198 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 309 transitions. [2022-11-20 11:46:09,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 309 transitions. [2022-11-20 11:46:09,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 11:46:09,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:09,199 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:09,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-20 11:46:09,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:46:09,413 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:46:09,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:09,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1305750857, now seen corresponding path program 6 times [2022-11-20 11:46:09,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:46:09,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458159083] [2022-11-20 11:46:09,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:46:09,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:46:09,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:46:09,415 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:09,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:09,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-20 11:46:09,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:46:09,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:46:09,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:09,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:46:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:46:10,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:46:14,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:46:14,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458159083] [2022-11-20 11:46:14,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458159083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:14,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:46:14,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-20 11:46:14,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806449147] [2022-11-20 11:46:14,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:14,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:46:14,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:46:14,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:46:14,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:46:14,403 INFO L87 Difference]: Start difference. First operand 265 states and 309 transitions. Second operand has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 26 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:15,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:15,760 INFO L93 Difference]: Finished difference Result 348 states and 409 transitions. [2022-11-20 11:46:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:46:15,763 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 26 states have internal predecessors, (98), 0 states have call successors, (0), 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 55 [2022-11-20 11:46:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:15,764 INFO L225 Difference]: With dead ends: 348 [2022-11-20 11:46:15,764 INFO L226 Difference]: Without dead ends: 345 [2022-11-20 11:46:15,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:46:15,765 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 55 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:15,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 201 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 203 Invalid, 0 Unknown, 31 Unchecked, 1.0s Time] [2022-11-20 11:46:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-20 11:46:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 317. [2022-11-20 11:46:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 315 states have (on average 1.2) internal successors, (378), 316 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 378 transitions. [2022-11-20 11:46:15,773 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 378 transitions. Word has length 55 [2022-11-20 11:46:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:15,773 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 378 transitions. [2022-11-20 11:46:15,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 26 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 378 transitions. [2022-11-20 11:46:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:46:15,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:15,777 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:15,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:15,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:46:15,992 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:46:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:15,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1224485671, now seen corresponding path program 7 times [2022-11-20 11:46:15,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:46:15,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456860541] [2022-11-20 11:46:15,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:46:15,993 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 11:46:15,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:46:15,995 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:16,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:16,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:46:16,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:16,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:46:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 35 proven. 36 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 11:46:17,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 41 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 11:46:19,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:46:19,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456860541] [2022-11-20 11:46:19,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456860541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:19,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:46:19,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2022-11-20 11:46:19,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430982934] [2022-11-20 11:46:19,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:19,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:46:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:46:19,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:46:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:46:19,126 INFO L87 Difference]: Start difference. First operand 317 states and 378 transitions. Second operand has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:19,422 INFO L93 Difference]: Finished difference Result 443 states and 532 transitions. [2022-11-20 11:46:19,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:46:19,423 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 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 56 [2022-11-20 11:46:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:19,426 INFO L225 Difference]: With dead ends: 443 [2022-11-20 11:46:19,426 INFO L226 Difference]: Without dead ends: 443 [2022-11-20 11:46:19,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:46:19,427 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:19,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 170 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2022-11-20 11:46:19,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-20 11:46:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 407. [2022-11-20 11:46:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 405 states have (on average 1.2246913580246914) internal successors, (496), 406 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 496 transitions. [2022-11-20 11:46:19,433 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 496 transitions. Word has length 56 [2022-11-20 11:46:19,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:19,433 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 496 transitions. [2022-11-20 11:46:19,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 19 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:19,434 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 496 transitions. [2022-11-20 11:46:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 11:46:19,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:19,435 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:19,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:19,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:46:19,652 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:46:19,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:19,652 INFO L85 PathProgramCache]: Analyzing trace with hash 629192199, now seen corresponding path program 8 times [2022-11-20 11:46:19,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:46:19,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745724030] [2022-11-20 11:46:19,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:46:19,653 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 11:46:19,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:46:19,654 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:19,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:19,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:46:19,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:46:19,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:46:19,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:19,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:46:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 11:46:20,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 11:46:23,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:46:23,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745724030] [2022-11-20 11:46:23,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745724030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:23,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:46:23,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 11:46:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722618364] [2022-11-20 11:46:23,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:23,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:46:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:46:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:46:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:46:23,546 INFO L87 Difference]: Start difference. First operand 407 states and 496 transitions. Second operand has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:33,443 INFO L93 Difference]: Finished difference Result 635 states and 769 transitions. [2022-11-20 11:46:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:46:33,445 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 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 58 [2022-11-20 11:46:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:33,447 INFO L225 Difference]: With dead ends: 635 [2022-11-20 11:46:33,447 INFO L226 Difference]: Without dead ends: 635 [2022-11-20 11:46:33,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=391, Invalid=1589, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 11:46:33,448 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 410 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:33,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 189 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 459 Invalid, 0 Unknown, 33 Unchecked, 3.8s Time] [2022-11-20 11:46:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-20 11:46:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 593. [2022-11-20 11:46:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 591 states have (on average 1.233502538071066) internal successors, (729), 592 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 729 transitions. [2022-11-20 11:46:33,459 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 729 transitions. Word has length 58 [2022-11-20 11:46:33,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:33,460 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 729 transitions. [2022-11-20 11:46:33,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 729 transitions. [2022-11-20 11:46:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 11:46:33,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:33,462 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:33,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:33,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:46:33,679 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:46:33,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2116574164, now seen corresponding path program 9 times [2022-11-20 11:46:33,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:46:33,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967011670] [2022-11-20 11:46:33,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:46:33,680 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 11:46:33,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:46:33,681 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:33,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:34,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 11:46:34,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:46:34,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:46:34,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 52 proven. 35 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 11:46:34,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 64 proven. 23 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 11:46:36,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:46:36,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967011670] [2022-11-20 11:46:36,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967011670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:36,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:46:36,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2022-11-20 11:46:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648656608] [2022-11-20 11:46:36,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:36,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:46:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:46:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:46:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:46:36,420 INFO L87 Difference]: Start difference. First operand 593 states and 729 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:41,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:41,530 INFO L93 Difference]: Finished difference Result 872 states and 1055 transitions. [2022-11-20 11:46:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 11:46:41,531 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 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 59 [2022-11-20 11:46:41,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:41,533 INFO L225 Difference]: With dead ends: 872 [2022-11-20 11:46:41,533 INFO L226 Difference]: Without dead ends: 872 [2022-11-20 11:46:41,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 11:46:41,534 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 504 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:41,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 233 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 11:46:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-20 11:46:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 612. [2022-11-20 11:46:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 610 states have (on average 1.2262295081967214) internal successors, (748), 611 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 748 transitions. [2022-11-20 11:46:41,544 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 748 transitions. Word has length 59 [2022-11-20 11:46:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:41,545 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 748 transitions. [2022-11-20 11:46:41,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 748 transitions. [2022-11-20 11:46:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 11:46:41,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:41,546 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:41,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:41,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:46:41,765 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:46:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash 509031846, now seen corresponding path program 5 times [2022-11-20 11:46:41,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:46:41,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621193856] [2022-11-20 11:46:41,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:46:41,766 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 11:46:41,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:46:41,767 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:41,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:46:42,123 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-20 11:46:42,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:46:42,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:46:42,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:42,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:46:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 33 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:43,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:46:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:49,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:46:49,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621193856] [2022-11-20 11:46:49,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621193856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:46:49,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:46:49,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2022-11-20 11:46:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217786381] [2022-11-20 11:46:49,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:46:49,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:46:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:46:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:46:49,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:46:49,109 INFO L87 Difference]: Start difference. First operand 612 states and 748 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:13,318 INFO L93 Difference]: Finished difference Result 1747 states and 2111 transitions. [2022-11-20 11:47:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 11:47:13,319 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-20 11:47:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:13,322 INFO L225 Difference]: With dead ends: 1747 [2022-11-20 11:47:13,322 INFO L226 Difference]: Without dead ends: 1745 [2022-11-20 11:47:13,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 88 SyntacticMatches, 9 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1352 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=725, Invalid=3697, Unknown=0, NotChecked=0, Total=4422 [2022-11-20 11:47:13,324 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 552 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 392 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:13,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 854 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 849 Invalid, 0 Unknown, 392 Unchecked, 4.7s Time] [2022-11-20 11:47:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2022-11-20 11:47:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 661. [2022-11-20 11:47:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 659 states have (on average 1.227617602427921) internal successors, (809), 660 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 809 transitions. [2022-11-20 11:47:13,339 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 809 transitions. Word has length 61 [2022-11-20 11:47:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:13,340 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 809 transitions. [2022-11-20 11:47:13,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 809 transitions. [2022-11-20 11:47:13,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 11:47:13,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:13,342 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:13,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:13,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:47:13,555 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:47:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1433042638, now seen corresponding path program 3 times [2022-11-20 11:47:13,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:47:13,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920767138] [2022-11-20 11:47:13,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:47:13,556 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 11:47:13,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:47:13,557 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:13,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:13,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 11:47:13,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:13,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:47:13,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:13,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:47:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 55 proven. 53 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:47:15,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:47:19,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:47:19,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920767138] [2022-11-20 11:47:19,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920767138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:19,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:47:19,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2022-11-20 11:47:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177907534] [2022-11-20 11:47:19,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:19,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 11:47:19,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:47:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 11:47:19,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:47:19,128 INFO L87 Difference]: Start difference. First operand 661 states and 809 transitions. Second operand has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:22,245 INFO L93 Difference]: Finished difference Result 1581 states and 1953 transitions. [2022-11-20 11:47:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:47:22,247 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-20 11:47:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:22,251 INFO L225 Difference]: With dead ends: 1581 [2022-11-20 11:47:22,252 INFO L226 Difference]: Without dead ends: 1574 [2022-11-20 11:47:22,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:47:22,252 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:22,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 252 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 169 Invalid, 0 Unknown, 32 Unchecked, 1.0s Time] [2022-11-20 11:47:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-11-20 11:47:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1528. [2022-11-20 11:47:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1526 states have (on average 1.2431192660550459) internal successors, (1897), 1527 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1897 transitions. [2022-11-20 11:47:22,273 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1897 transitions. Word has length 61 [2022-11-20 11:47:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:22,273 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 1897 transitions. [2022-11-20 11:47:22,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1897 transitions. [2022-11-20 11:47:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 11:47:22,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:22,292 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:22,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:22,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:47:22,510 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:47:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:22,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1593345728, now seen corresponding path program 4 times [2022-11-20 11:47:22,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:47:22,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923000620] [2022-11-20 11:47:22,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:47:22,511 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 11:47:22,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:47:22,512 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:22,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:22,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:47:22,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:22,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:47:22,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:22,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:47:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 77 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:47:23,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:47:27,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:47:27,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923000620] [2022-11-20 11:47:27,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923000620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:27,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:47:27,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-20 11:47:27,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261588531] [2022-11-20 11:47:27,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:27,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:47:27,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:47:27,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:47:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:47:27,422 INFO L87 Difference]: Start difference. First operand 1528 states and 1897 transitions. Second operand has 25 states, 25 states have (on average 4.24) internal successors, (106), 25 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:28,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:28,703 INFO L93 Difference]: Finished difference Result 1776 states and 2189 transitions. [2022-11-20 11:47:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:47:28,704 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.24) internal successors, (106), 25 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-20 11:47:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:28,707 INFO L225 Difference]: With dead ends: 1776 [2022-11-20 11:47:28,707 INFO L226 Difference]: Without dead ends: 1750 [2022-11-20 11:47:28,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:47:28,708 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 62 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:28,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 242 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 0 Unknown, 52 Unchecked, 1.0s Time] [2022-11-20 11:47:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2022-11-20 11:47:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1650. [2022-11-20 11:47:28,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.2433252427184467) internal successors, (2049), 1649 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2049 transitions. [2022-11-20 11:47:28,727 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2049 transitions. Word has length 61 [2022-11-20 11:47:28,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:28,728 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2049 transitions. [2022-11-20 11:47:28,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.24) internal successors, (106), 25 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2049 transitions. [2022-11-20 11:47:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 11:47:28,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:28,730 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:28,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:28,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:47:28,946 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:47:28,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:28,946 INFO L85 PathProgramCache]: Analyzing trace with hash -555836402, now seen corresponding path program 5 times [2022-11-20 11:47:28,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:47:28,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640555582] [2022-11-20 11:47:28,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:47:28,947 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 11:47:28,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:47:28,948 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:28,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:29,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 11:47:29,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:29,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:47:29,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:29,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:47:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:47:30,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 1 proven. 108 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:47:34,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:47:34,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640555582] [2022-11-20 11:47:34,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640555582] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:34,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:47:34,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-20 11:47:34,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766954424] [2022-11-20 11:47:34,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:34,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:47:34,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:47:34,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:47:34,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:47:34,413 INFO L87 Difference]: Start difference. First operand 1650 states and 2049 transitions. Second operand has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:37,315 INFO L93 Difference]: Finished difference Result 1860 states and 2287 transitions. [2022-11-20 11:47:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:47:37,317 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-20 11:47:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:37,320 INFO L225 Difference]: With dead ends: 1860 [2022-11-20 11:47:37,320 INFO L226 Difference]: Without dead ends: 1852 [2022-11-20 11:47:37,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=201, Invalid=1059, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:47:37,321 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:37,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 406 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 103 Unchecked, 1.1s Time] [2022-11-20 11:47:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2022-11-20 11:47:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1731. [2022-11-20 11:47:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1729 states have (on average 1.2423366107576634) internal successors, (2148), 1730 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2148 transitions. [2022-11-20 11:47:37,339 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2148 transitions. Word has length 61 [2022-11-20 11:47:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:37,339 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2148 transitions. [2022-11-20 11:47:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2148 transitions. [2022-11-20 11:47:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 11:47:37,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:37,341 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:37,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:37,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:47:37,552 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:47:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1984058990, now seen corresponding path program 2 times [2022-11-20 11:47:37,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:47:37,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196190090] [2022-11-20 11:47:37,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:47:37,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:47:37,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:47:37,554 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:37,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:37,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:47:37,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:37,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:47:37,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:37,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:47:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 7 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:39,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:44,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:47:44,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196190090] [2022-11-20 11:47:44,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196190090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:44,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:47:44,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-11-20 11:47:44,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604587037] [2022-11-20 11:47:44,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:44,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 11:47:44,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:47:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 11:47:44,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:47:44,687 INFO L87 Difference]: Start difference. First operand 1731 states and 2148 transitions. Second operand has 33 states, 33 states have (on average 3.757575757575758) internal successors, (124), 33 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:49,316 INFO L93 Difference]: Finished difference Result 1928 states and 2381 transitions. [2022-11-20 11:47:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:47:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.757575757575758) internal successors, (124), 33 states have internal predecessors, (124), 0 states have call successors, (0), 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 63 [2022-11-20 11:47:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:49,320 INFO L225 Difference]: With dead ends: 1928 [2022-11-20 11:47:49,320 INFO L226 Difference]: Without dead ends: 1927 [2022-11-20 11:47:49,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=282, Invalid=1440, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 11:47:49,321 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 141 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:49,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 316 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 326 Invalid, 0 Unknown, 16 Unchecked, 2.1s Time] [2022-11-20 11:47:49,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2022-11-20 11:47:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1837. [2022-11-20 11:47:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1835 states have (on average 1.2452316076294279) internal successors, (2285), 1836 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2285 transitions. [2022-11-20 11:47:49,339 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2285 transitions. Word has length 63 [2022-11-20 11:47:49,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:49,340 INFO L495 AbstractCegarLoop]: Abstraction has 1837 states and 2285 transitions. [2022-11-20 11:47:49,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.757575757575758) internal successors, (124), 33 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2285 transitions. [2022-11-20 11:47:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 11:47:49,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:49,342 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:49,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:49,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:47:49,557 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:47:49,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash 565527582, now seen corresponding path program 6 times [2022-11-20 11:47:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:47:49,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799476854] [2022-11-20 11:47:49,557 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:47:49,557 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 11:47:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:47:49,559 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:49,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:47:49,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 11:47:49,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:49,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:47:49,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 58 proven. 36 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 11:47:50,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 57 proven. 39 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 11:47:52,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:47:52,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799476854] [2022-11-20 11:47:52,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799476854] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:52,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:47:52,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2022-11-20 11:47:52,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527046693] [2022-11-20 11:47:52,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:52,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:47:52,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:47:52,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:47:52,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:47:52,312 INFO L87 Difference]: Start difference. First operand 1837 states and 2285 transitions. Second operand has 19 states, 19 states have (on average 4.0) internal successors, (76), 19 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:02,207 INFO L93 Difference]: Finished difference Result 2766 states and 3415 transitions. [2022-11-20 11:48:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:48:02,209 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 19 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-20 11:48:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:02,215 INFO L225 Difference]: With dead ends: 2766 [2022-11-20 11:48:02,216 INFO L226 Difference]: Without dead ends: 2739 [2022-11-20 11:48:02,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=433, Invalid=1919, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 11:48:02,217 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 409 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:02,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 232 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 11:48:02,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2022-11-20 11:48:02,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2434. [2022-11-20 11:48:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 2432 states have (on average 1.2393092105263157) internal successors, (3014), 2433 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3014 transitions. [2022-11-20 11:48:02,257 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3014 transitions. Word has length 64 [2022-11-20 11:48:02,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:02,257 INFO L495 AbstractCegarLoop]: Abstraction has 2434 states and 3014 transitions. [2022-11-20 11:48:02,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 19 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:02,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3014 transitions. [2022-11-20 11:48:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 11:48:02,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:02,260 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2022-11-20 11:48:02,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:02,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:48:02,460 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:48:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash 58542645, now seen corresponding path program 4 times [2022-11-20 11:48:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:48:02,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088063207] [2022-11-20 11:48:02,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:48:02,461 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 11:48:02,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:48:02,462 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:48:02,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:48:02,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:48:02,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:48:02,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:48:02,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:02,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:48:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:04,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:15,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:48:15,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088063207] [2022-11-20 11:48:15,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088063207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:15,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:48:15,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2022-11-20 11:48:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426410023] [2022-11-20 11:48:15,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:15,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 11:48:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:48:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 11:48:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 11:48:15,120 INFO L87 Difference]: Start difference. First operand 2434 states and 3014 transitions. Second operand has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:29,003 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:48:31,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:48:33,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:48:35,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:48:42,263 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:48:58,691 WARN L233 SmtUtils]: Spent 15.60s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:49:01,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:49:03,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:49:04,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:49:06,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:49:13,855 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:49:25,388 WARN L233 SmtUtils]: Spent 10.70s on a formula simplification. DAG size of input: 152 DAG size of output: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:49:28,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:49:30,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:49:32,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:49:38,146 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 146 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:49:49,693 WARN L233 SmtUtils]: Spent 10.31s on a formula simplification. DAG size of input: 141 DAG size of output: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:49:52,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:49:54,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:49:56,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:50:10,573 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:50:13,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:50:15,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:50:17,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:50:30,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:50:32,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:50:34,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:50:43,511 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 109 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:50:46,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:50:48,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:50:50,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:00,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:02,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:11,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:13,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:20,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:22,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:28,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:30,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:35,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:40,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:51:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:43,975 INFO L93 Difference]: Finished difference Result 19421 states and 23905 transitions. [2022-11-20 11:51:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-20 11:51:43,977 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-20 11:51:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:44,017 INFO L225 Difference]: With dead ends: 19421 [2022-11-20 11:51:44,017 INFO L226 Difference]: Without dead ends: 19421 [2022-11-20 11:51:44,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2441 ImplicationChecksByTransitivity, 138.6s TimeCoverageRelationStatistics Valid=2223, Invalid=5259, Unknown=0, NotChecked=0, Total=7482 [2022-11-20 11:51:44,020 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 5193 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 144 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5193 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 77.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:44,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5193 Valid, 2624 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3095 Invalid, 31 Unknown, 198 Unchecked, 77.9s Time] [2022-11-20 11:51:44,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19421 states. [2022-11-20 11:51:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19421 to 2498. [2022-11-20 11:51:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2496 states have (on average 1.2395833333333333) internal successors, (3094), 2497 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3094 transitions. [2022-11-20 11:51:44,205 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3094 transitions. Word has length 66 [2022-11-20 11:51:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:44,205 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 3094 transitions. [2022-11-20 11:51:44,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:51:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3094 transitions. [2022-11-20 11:51:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:51:44,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:44,208 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:44,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 11:51:44,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:51:44,421 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:51:44,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1463771587, now seen corresponding path program 3 times [2022-11-20 11:51:44,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:51:44,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667794362] [2022-11-20 11:51:44,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:51:44,422 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 11:51:44,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:51:44,424 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:51:44,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:51:44,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 11:51:44,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:44,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:51:44,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:44,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:51:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 72 proven. 61 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 11:51:48,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:08,488 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:52:15,603 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:52:23,145 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:52:30,795 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:52:38,977 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:52:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 11:52:38,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:38,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667794362] [2022-11-20 11:52:38,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667794362] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:38,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:52:38,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2022-11-20 11:52:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718833285] [2022-11-20 11:52:38,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:52:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:52:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=867, Unknown=3, NotChecked=0, Total=992 [2022-11-20 11:52:38,994 INFO L87 Difference]: Start difference. First operand 2498 states and 3094 transitions. Second operand has 32 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:46,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:46,519 INFO L93 Difference]: Finished difference Result 2605 states and 3226 transitions. [2022-11-20 11:52:46,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:52:46,521 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-20 11:52:46,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:46,526 INFO L225 Difference]: With dead ends: 2605 [2022-11-20 11:52:46,526 INFO L226 Difference]: Without dead ends: 2601 [2022-11-20 11:52:46,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=232, Invalid=1571, Unknown=3, NotChecked=0, Total=1806 [2022-11-20 11:52:46,527 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 200 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:46,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 423 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 321 Invalid, 0 Unknown, 372 Unchecked, 2.8s Time] [2022-11-20 11:52:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2022-11-20 11:52:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2541. [2022-11-20 11:52:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2539 states have (on average 1.2434029145332808) internal successors, (3157), 2540 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3157 transitions. [2022-11-20 11:52:46,574 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3157 transitions. Word has length 67 [2022-11-20 11:52:46,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:46,575 INFO L495 AbstractCegarLoop]: Abstraction has 2541 states and 3157 transitions. [2022-11-20 11:52:46,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3157 transitions. [2022-11-20 11:52:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:52:46,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:46,578 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:46,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:46,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:52:46,808 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:52:46,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:46,809 INFO L85 PathProgramCache]: Analyzing trace with hash 203135717, now seen corresponding path program 7 times [2022-11-20 11:52:46,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:46,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181359481] [2022-11-20 11:52:46,809 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:52:46,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:46,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:46,811 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:52:46,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:52:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:47,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:52:47,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:47,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:52:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 83 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:52:49,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:52:55,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:52:55,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181359481] [2022-11-20 11:52:55,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181359481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:55,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:52:55,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-20 11:52:55,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939472384] [2022-11-20 11:52:55,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:55,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:52:55,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:52:55,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:52:55,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:52:55,802 INFO L87 Difference]: Start difference. First operand 2541 states and 3157 transitions. Second operand has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:57,751 INFO L93 Difference]: Finished difference Result 2559 states and 3142 transitions. [2022-11-20 11:52:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:52:57,753 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-20 11:52:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:57,757 INFO L225 Difference]: With dead ends: 2559 [2022-11-20 11:52:57,758 INFO L226 Difference]: Without dead ends: 2505 [2022-11-20 11:52:57,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:52:57,759 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:57,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 228 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 203 Invalid, 0 Unknown, 15 Unchecked, 1.5s Time] [2022-11-20 11:52:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2022-11-20 11:52:57,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2450. [2022-11-20 11:52:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2448 states have (on average 1.2365196078431373) internal successors, (3027), 2449 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:57,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3027 transitions. [2022-11-20 11:52:57,806 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3027 transitions. Word has length 67 [2022-11-20 11:52:57,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:57,807 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 3027 transitions. [2022-11-20 11:52:57,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:52:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3027 transitions. [2022-11-20 11:52:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:52:57,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:57,810 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:57,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:58,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:52:58,023 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:52:58,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1572902537, now seen corresponding path program 8 times [2022-11-20 11:52:58,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:52:58,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456290291] [2022-11-20 11:52:58,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:52:58,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:52:58,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:52:58,027 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:52:58,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:52:58,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:52:58,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:52:58,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:52:58,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:58,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:53:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 83 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:53:00,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 11:53:06,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:53:06,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456290291] [2022-11-20 11:53:06,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456290291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:06,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:53:06,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2022-11-20 11:53:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325669215] [2022-11-20 11:53:06,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:06,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:53:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:53:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:53:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:53:06,944 INFO L87 Difference]: Start difference. First operand 2450 states and 3027 transitions. Second operand has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:10,064 INFO L93 Difference]: Finished difference Result 2490 states and 3084 transitions. [2022-11-20 11:53:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:53:10,066 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-20 11:53:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:10,069 INFO L225 Difference]: With dead ends: 2490 [2022-11-20 11:53:10,069 INFO L226 Difference]: Without dead ends: 2476 [2022-11-20 11:53:10,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:53:10,070 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:10,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 223 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 0 Unknown, 24 Unchecked, 1.3s Time] [2022-11-20 11:53:10,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-11-20 11:53:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2348. [2022-11-20 11:53:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2346 states have (on average 1.2463768115942029) internal successors, (2924), 2347 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 2924 transitions. [2022-11-20 11:53:10,108 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 2924 transitions. Word has length 67 [2022-11-20 11:53:10,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:10,109 INFO L495 AbstractCegarLoop]: Abstraction has 2348 states and 2924 transitions. [2022-11-20 11:53:10,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 2924 transitions. [2022-11-20 11:53:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:53:10,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:10,111 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:10,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:53:10,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:53:10,328 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:53:10,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:10,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1759807529, now seen corresponding path program 9 times [2022-11-20 11:53:10,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:53:10,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955499236] [2022-11-20 11:53:10,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:53:10,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:53:10,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:53:10,330 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:53:10,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:53:10,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:53:10,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:53:10,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:53:10,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:10,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:53:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 71 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:53:14,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 33 proven. 53 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:53:21,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:53:21,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955499236] [2022-11-20 11:53:21,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955499236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:21,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:53:21,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 11:53:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961830554] [2022-11-20 11:53:21,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:21,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:53:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:53:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:53:21,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:53:21,090 INFO L87 Difference]: Start difference. First operand 2348 states and 2924 transitions. Second operand has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:21,695 INFO L93 Difference]: Finished difference Result 2412 states and 2971 transitions. [2022-11-20 11:53:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:53:21,697 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-20 11:53:21,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:21,700 INFO L225 Difference]: With dead ends: 2412 [2022-11-20 11:53:21,700 INFO L226 Difference]: Without dead ends: 2398 [2022-11-20 11:53:21,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:53:21,701 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 54 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:21,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 209 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 148 Unchecked, 0.5s Time] [2022-11-20 11:53:21,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2022-11-20 11:53:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2288. [2022-11-20 11:53:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 2286 states have (on average 1.2379702537182853) internal successors, (2830), 2287 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2830 transitions. [2022-11-20 11:53:21,745 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2830 transitions. Word has length 67 [2022-11-20 11:53:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:21,745 INFO L495 AbstractCegarLoop]: Abstraction has 2288 states and 2830 transitions. [2022-11-20 11:53:21,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2830 transitions. [2022-11-20 11:53:21,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 11:53:21,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:21,747 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:21,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:21,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:53:21,979 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:53:21,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:21,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1388495173, now seen corresponding path program 10 times [2022-11-20 11:53:21,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:53:21,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679808711] [2022-11-20 11:53:21,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:53:21,980 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 11:53:21,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:53:21,982 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:53:22,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:53:22,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:53:22,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:53:22,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:53:22,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:22,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:53:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:53:25,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 7 proven. 128 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:53:34,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:53:34,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679808711] [2022-11-20 11:53:34,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679808711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:34,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:53:34,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2022-11-20 11:53:34,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086290895] [2022-11-20 11:53:34,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:34,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:53:34,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:53:34,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:53:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:53:34,305 INFO L87 Difference]: Start difference. First operand 2288 states and 2830 transitions. Second operand has 31 states, 30 states have (on average 3.4) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:53,328 INFO L93 Difference]: Finished difference Result 3345 states and 4117 transitions. [2022-11-20 11:54:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-20 11:54:53,331 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.4) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-20 11:54:53,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:53,334 INFO L225 Difference]: With dead ends: 3345 [2022-11-20 11:54:53,334 INFO L226 Difference]: Without dead ends: 3327 [2022-11-20 11:54:53,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2951 ImplicationChecksByTransitivity, 70.3s TimeCoverageRelationStatistics Valid=2104, Invalid=6638, Unknown=0, NotChecked=0, Total=8742 [2022-11-20 11:54:53,335 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1454 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:53,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 427 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 922 Invalid, 0 Unknown, 171 Unchecked, 14.8s Time] [2022-11-20 11:54:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2022-11-20 11:54:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 2629. [2022-11-20 11:54:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2629 states, 2627 states have (on average 1.238675295013323) internal successors, (3254), 2628 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 3254 transitions. [2022-11-20 11:54:53,364 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 3254 transitions. Word has length 68 [2022-11-20 11:54:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:53,364 INFO L495 AbstractCegarLoop]: Abstraction has 2629 states and 3254 transitions. [2022-11-20 11:54:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.4) internal successors, (102), 31 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:54:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 3254 transitions. [2022-11-20 11:54:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 11:54:53,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:53,367 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:53,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:53,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:54:53,583 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:54:53,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:53,583 INFO L85 PathProgramCache]: Analyzing trace with hash -608240947, now seen corresponding path program 6 times [2022-11-20 11:54:53,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:54:53,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141694354] [2022-11-20 11:54:53,583 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:54:53,584 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 11:54:53,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:54:53,585 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:54:53,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:54:54,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-11-20 11:54:54,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:54,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 11:54:54,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:54,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:54:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:54:58,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:55:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:55:13,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:55:13,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141694354] [2022-11-20 11:55:13,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141694354] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:55:13,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:55:13,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 33 [2022-11-20 11:55:13,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703198946] [2022-11-20 11:55:13,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:55:13,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:55:13,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:55:13,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:55:13,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:55:13,451 INFO L87 Difference]: Start difference. First operand 2629 states and 3254 transitions. Second operand has 34 states, 33 states have (on average 3.212121212121212) internal successors, (106), 34 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:55:24,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:55:25,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:56:11,631 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 131 DAG size of output: 114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:56:41,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:58:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:25,204 INFO L93 Difference]: Finished difference Result 3355 states and 4107 transitions. [2022-11-20 11:58:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-20 11:58:25,207 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.212121212121212) internal successors, (106), 34 states have internal predecessors, (106), 0 states have call successors, (0), 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 70 [2022-11-20 11:58:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:25,209 INFO L225 Difference]: With dead ends: 3355 [2022-11-20 11:58:25,209 INFO L226 Difference]: Without dead ends: 3333 [2022-11-20 11:58:25,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6187 ImplicationChecksByTransitivity, 164.2s TimeCoverageRelationStatistics Valid=3886, Invalid=13406, Unknown=0, NotChecked=0, Total=17292 [2022-11-20 11:58:25,211 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1154 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 203 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:25,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 720 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1596 Invalid, 1 Unknown, 147 Unchecked, 37.0s Time] [2022-11-20 11:58:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2022-11-20 11:58:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 3150. [2022-11-20 11:58:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 3148 states have (on average 1.241105463786531) internal successors, (3907), 3149 states have internal predecessors, (3907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 3907 transitions. [2022-11-20 11:58:25,241 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 3907 transitions. Word has length 70 [2022-11-20 11:58:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:25,242 INFO L495 AbstractCegarLoop]: Abstraction has 3150 states and 3907 transitions. [2022-11-20 11:58:25,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.212121212121212) internal successors, (106), 34 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 3907 transitions. [2022-11-20 11:58:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 11:58:25,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:25,244 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:25,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-20 11:58:25,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:58:25,460 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:58:25,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:25,460 INFO L85 PathProgramCache]: Analyzing trace with hash 386515133, now seen corresponding path program 10 times [2022-11-20 11:58:25,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:58:25,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962811031] [2022-11-20 11:58:25,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:58:25,461 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 11:58:25,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:58:25,462 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:58:25,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-20 11:58:25,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:58:25,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:58:25,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:58:25,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:58:25,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 11:58:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 51 proven. 80 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 11:58:31,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:58:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 38 proven. 93 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 11:58:34,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:58:34,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962811031] [2022-11-20 11:58:34,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962811031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:58:34,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:58:34,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2022-11-20 11:58:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245032551] [2022-11-20 11:58:34,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:58:34,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:58:34,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:58:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:58:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:58:34,754 INFO L87 Difference]: Start difference. First operand 3150 states and 3907 transitions. Second operand has 21 states, 20 states have (on average 5.1) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:35,719 INFO L93 Difference]: Finished difference Result 4191 states and 5160 transitions. [2022-11-20 11:58:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:58:35,721 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-20 11:58:35,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:35,724 INFO L225 Difference]: With dead ends: 4191 [2022-11-20 11:58:35,724 INFO L226 Difference]: Without dead ends: 4191 [2022-11-20 11:58:35,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:58:35,725 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:35,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 237 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 32 Unchecked, 0.6s Time] [2022-11-20 11:58:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2022-11-20 11:58:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3402. [2022-11-20 11:58:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3400 states have (on average 1.2352941176470589) internal successors, (4200), 3401 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 4200 transitions. [2022-11-20 11:58:35,769 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 4200 transitions. Word has length 73 [2022-11-20 11:58:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:35,770 INFO L495 AbstractCegarLoop]: Abstraction has 3402 states and 4200 transitions. [2022-11-20 11:58:35,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 4200 transitions. [2022-11-20 11:58:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 11:58:35,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:35,772 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:35,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-20 11:58:35,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.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 11:58:35,973 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-11-20 11:58:35,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash -871943341, now seen corresponding path program 11 times [2022-11-20 11:58:35,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:58:35,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294494750] [2022-11-20 11:58:35,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:58:35,974 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 11:58:35,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:58:35,975 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -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 11:58:35,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76467dec-74fa-4e43-86b7-85398fdf14f0/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-20 11:58:36,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-20 11:58:36,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:58:36,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:58:36,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:58:38,014 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 78 proven. 93 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 11:58:38,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:58:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 91 proven. 80 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 11:58:40,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:58:40,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294494750] [2022-11-20 11:58:40,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294494750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:58:40,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:58:40,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 11:58:40,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823626534] [2022-11-20 11:58:40,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:58:40,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:58:40,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:58:40,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:58:40,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:58:40,557 INFO L87 Difference]: Start difference. First operand 3402 states and 4200 transitions. Second operand has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)