./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a --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 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe --- 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-b5237d8 [2022-11-21 16:38:49,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:38:49,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:38:49,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:38:49,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:38:49,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:38:49,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:38:49,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:38:49,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:38:49,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:38:49,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:38:49,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:38:49,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:38:49,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:38:49,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:38:49,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:38:49,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:38:49,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:38:49,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:38:49,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:38:49,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:38:49,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:38:49,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:38:49,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:38:49,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:38:49,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:38:49,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:38:49,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:38:49,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:38:49,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:38:49,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:38:49,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:38:49,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:38:49,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:38:49,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:38:49,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:38:49,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:38:49,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:38:49,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:38:49,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:38:49,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:38:49,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 16:38:49,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:38:49,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:38:49,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:38:49,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:38:49,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:38:49,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:38:49,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:38:49,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:38:49,288 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:38:49,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:38:49,288 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:38:49,288 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:38:49,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:38:49,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:38:49,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:38:49,289 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:38:49,289 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:38:49,290 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:38:49,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:38:49,290 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:38:49,290 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:38:49,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:38:49,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:38:49,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:38:49,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:38:49,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:38:49,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:38:49,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:38:49,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:38:49,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:38:49,292 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_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe [2022-11-21 16:38:49,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:38:49,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:38:49,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:38:49,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:38:49,706 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:38:49,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2022-11-21 16:38:52,774 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:38:53,091 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:38:53,091 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2022-11-21 16:38:53,112 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/data/dff37a9d4/2de7074ef7214cfc9fb3b669b24a4aeb/FLAGc1cf3f7e9 [2022-11-21 16:38:53,136 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/data/dff37a9d4/2de7074ef7214cfc9fb3b669b24a4aeb [2022-11-21 16:38:53,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:38:53,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:38:53,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:38:53,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:38:53,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:38:53,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:38:53" (1/1) ... [2022-11-21 16:38:53,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49088b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:38:53, skipping insertion in model container [2022-11-21 16:38:53,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:38:53" (1/1) ... [2022-11-21 16:38:53,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:38:53,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:38:53,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:38:53,737 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) [2022-11-21 16:38:53,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29dad7f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:38:53, skipping insertion in model container [2022-11-21 16:38:53,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:38:53,740 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 16:38:53,742 INFO L158 Benchmark]: Toolchain (without parser) took 595.69ms. Allocated memory is still 174.1MB. Free memory was 139.8MB in the beginning and 140.0MB in the end (delta: -202.0kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-21 16:38:53,743 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:38:53,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.56ms. Allocated memory is still 174.1MB. Free memory was 139.8MB in the beginning and 140.0MB in the end (delta: -202.0kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-21 16:38:53,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 589.56ms. Allocated memory is still 174.1MB. Free memory was 139.8MB in the beginning and 140.0MB in the end (delta: -202.0kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 545]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a --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 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe --- 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-b5237d8 [2022-11-21 16:38:56,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:38:56,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:38:56,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:38:56,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:38:56,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:38:56,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:38:56,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:38:56,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:38:56,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:38:56,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:38:56,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:38:56,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:38:56,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:38:56,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:38:56,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:38:56,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:38:56,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:38:56,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:38:56,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:38:56,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:38:56,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:38:56,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:38:56,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:38:56,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:38:56,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:38:56,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:38:56,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:38:56,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:38:56,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:38:56,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:38:56,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:38:56,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:38:56,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:38:56,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:38:56,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:38:56,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:38:56,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:38:56,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:38:56,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:38:56,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:38:56,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 16:38:56,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:38:56,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:38:56,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:38:56,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:38:56,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:38:56,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:38:56,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:38:56,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:38:56,529 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:38:56,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:38:56,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:38:56,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:38:56,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:38:56,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:38:56,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:38:56,532 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:38:56,533 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:38:56,533 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:38:56,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:38:56,534 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:38:56,534 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 16:38:56,534 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 16:38:56,535 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:38:56,535 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:38:56,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:38:56,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:38:56,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:38:56,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:38:56,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:38:56,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:38:56,538 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 16:38:56,538 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 16:38:56,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 16:38:56,539 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_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe [2022-11-21 16:38:56,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:38:57,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:38:57,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:38:57,015 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:38:57,016 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:38:57,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2022-11-21 16:39:00,433 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:39:00,726 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:39:00,727 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2022-11-21 16:39:00,745 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/data/78e11a302/7107d7edc04e43a697dea9b81089ba47/FLAG1becb8119 [2022-11-21 16:39:00,763 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/data/78e11a302/7107d7edc04e43a697dea9b81089ba47 [2022-11-21 16:39:00,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:39:00,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:39:00,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:39:00,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:39:00,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:39:00,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:39:00" (1/1) ... [2022-11-21 16:39:00,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9c5c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:00, skipping insertion in model container [2022-11-21 16:39:00,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:39:00" (1/1) ... [2022-11-21 16:39:00,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:39:00,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:39:01,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:39:01,192 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 16:39:01,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:39:01,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:39:01,241 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:39:01,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:39:01,319 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:39:01,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01 WrapperNode [2022-11-21 16:39:01,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:39:01,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:39:01,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:39:01,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:39:01,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,402 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-11-21 16:39:01,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:39:01,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:39:01,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:39:01,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:39:01,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,460 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:39:01,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:39:01,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:39:01,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:39:01,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (1/1) ... [2022-11-21 16:39:01,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:39:01,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:39:01,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:39:01,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:39:01,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 16:39:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:39:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:39:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 16:39:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:39:01,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:39:01,737 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:39:01,741 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:39:02,172 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:39:02,178 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:39:02,178 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 16:39:02,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:39:02 BoogieIcfgContainer [2022-11-21 16:39:02,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:39:02,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:39:02,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:39:02,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:39:02,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:39:00" (1/3) ... [2022-11-21 16:39:02,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e29e59a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:39:02, skipping insertion in model container [2022-11-21 16:39:02,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:39:01" (2/3) ... [2022-11-21 16:39:02,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e29e59a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:39:02, skipping insertion in model container [2022-11-21 16:39:02,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:39:02" (3/3) ... [2022-11-21 16:39:02,189 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-alloca-2.i [2022-11-21 16:39:02,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:39:02,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-21 16:39:02,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:39:02,266 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;@161e2192, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:39:02,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-21 16:39:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:39:02,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:02,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:02,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:02,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:02,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2022-11-21 16:39:02,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:02,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488680362] [2022-11-21 16:39:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:02,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:02,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:02,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:02,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:39:02,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:02,588 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-11-21 16:39:02,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-21 16:39:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:02,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:02,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:02,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488680362] [2022-11-21 16:39:02,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488680362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:02,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:02,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:39:02,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497080488] [2022-11-21 16:39:02,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:02,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:39:02,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:02,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:39:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:39:02,681 INFO L87 Difference]: Start difference. First operand has 42 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 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 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:02,784 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-11-21 16:39:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:39:02,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 16:39:02,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:02,796 INFO L225 Difference]: With dead ends: 41 [2022-11-21 16:39:02,797 INFO L226 Difference]: Without dead ends: 39 [2022-11-21 16:39:02,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:39:02,802 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:02,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 39 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:02,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-21 16:39:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-21 16:39:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-11-21 16:39:02,839 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 7 [2022-11-21 16:39:02,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:02,840 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-11-21 16:39:02,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:02,840 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-11-21 16:39:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:39:02,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:02,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:02,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:39:03,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:03,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:03,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:03,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2022-11-21 16:39:03,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:03,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529478193] [2022-11-21 16:39:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:03,056 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 [2022-11-21 16:39:03,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:03,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:03,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:03,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:39:03,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:03,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:03,345 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-21 16:39:03,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 20 [2022-11-21 16:39:03,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 16:39:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:03,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:03,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:03,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529478193] [2022-11-21 16:39:03,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529478193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:03,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:03,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:39:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647912959] [2022-11-21 16:39:03,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:03,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:39:03,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:03,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:39:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:39:03,458 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:03,736 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2022-11-21 16:39:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:39:03,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 16:39:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:03,739 INFO L225 Difference]: With dead ends: 79 [2022-11-21 16:39:03,740 INFO L226 Difference]: Without dead ends: 79 [2022-11-21 16:39:03,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:03,741 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 47 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:03,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 165 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:39:03,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-21 16:39:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 43. [2022-11-21 16:39:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 42 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) [2022-11-21 16:39:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-11-21 16:39:03,751 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 7 [2022-11-21 16:39:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:03,751 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-11-21 16:39:03,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-11-21 16:39:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:39:03,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:03,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:03,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:03,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:03,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2022-11-21 16:39:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:03,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235582491] [2022-11-21 16:39:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:03,956 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 [2022-11-21 16:39:03,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:03,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:03,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:04,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 16:39:04,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:04,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:04,195 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-21 16:39:04,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2022-11-21 16:39:04,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 16:39:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:04,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:04,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:04,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235582491] [2022-11-21 16:39:04,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235582491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:04,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:04,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:39:04,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503121711] [2022-11-21 16:39:04,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:04,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:39:04,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:39:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:39:04,340 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:04,570 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2022-11-21 16:39:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:39:04,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 16:39:04,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:04,572 INFO L225 Difference]: With dead ends: 47 [2022-11-21 16:39:04,572 INFO L226 Difference]: Without dead ends: 47 [2022-11-21 16:39:04,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:04,574 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:04,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 69 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:39:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-21 16:39:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2022-11-21 16:39:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.6551724137931034) 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) [2022-11-21 16:39:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-21 16:39:04,580 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 7 [2022-11-21 16:39:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:04,581 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-21 16:39:04,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-21 16:39:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 16:39:04,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:04,582 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:04,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:04,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:04,795 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1906083540, now seen corresponding path program 1 times [2022-11-21 16:39:04,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:04,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871295973] [2022-11-21 16:39:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:04,797 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 [2022-11-21 16:39:04,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:04,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:04,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:04,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:39:04,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:04,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:05,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:05,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871295973] [2022-11-21 16:39:05,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871295973] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:05,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:05,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 16:39:05,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399626797] [2022-11-21 16:39:05,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:05,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:39:05,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:39:05,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:39:05,123 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:05,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:05,244 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2022-11-21 16:39:05,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:39:05,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 16:39:05,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:05,249 INFO L225 Difference]: With dead ends: 77 [2022-11-21 16:39:05,249 INFO L226 Difference]: Without dead ends: 77 [2022-11-21 16:39:05,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:39:05,251 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 79 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:05,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 187 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-21 16:39:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 48. [2022-11-21 16:39:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 47 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) [2022-11-21 16:39:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2022-11-21 16:39:05,261 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 11 [2022-11-21 16:39:05,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:05,262 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2022-11-21 16:39:05,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2022-11-21 16:39:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 16:39:05,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:05,263 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:05,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:05,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:05,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:05,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2022-11-21 16:39:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:05,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584929880] [2022-11-21 16:39:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:05,465 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 [2022-11-21 16:39:05,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:05,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:05,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:05,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:39:05,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:05,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:05,678 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-21 16:39:05,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2022-11-21 16:39:05,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 16:39:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:05,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:06,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:39:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:06,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:06,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584929880] [2022-11-21 16:39:06,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584929880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:06,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:06,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-11-21 16:39:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631965246] [2022-11-21 16:39:06,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:39:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:39:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:39:06,779 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:08,137 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2022-11-21 16:39:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:39:08,139 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 16:39:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:08,140 INFO L225 Difference]: With dead ends: 118 [2022-11-21 16:39:08,140 INFO L226 Difference]: Without dead ends: 118 [2022-11-21 16:39:08,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:39:08,141 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 391 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:08,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 160 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 16:39:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-21 16:39:08,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 60. [2022-11-21 16:39:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2022-11-21 16:39:08,147 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 11 [2022-11-21 16:39:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:08,147 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2022-11-21 16:39:08,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-11-21 16:39:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:39:08,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:08,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:08,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:08,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:08,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2090265385, now seen corresponding path program 1 times [2022-11-21 16:39:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:08,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283702869] [2022-11-21 16:39:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:08,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:08,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:08,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:08,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:08,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:39:08,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:08,548 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-21 16:39:08,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2022-11-21 16:39:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:08,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:08,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:08,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283702869] [2022-11-21 16:39:08,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283702869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:08,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:08,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:39:08,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937771666] [2022-11-21 16:39:08,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:08,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:39:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:39:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:39:08,608 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2022-11-21 16:39:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:08,710 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2022-11-21 16:39:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:39:08,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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 [2022-11-21 16:39:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:08,712 INFO L225 Difference]: With dead ends: 59 [2022-11-21 16:39:08,712 INFO L226 Difference]: Without dead ends: 59 [2022-11-21 16:39:08,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:39:08,713 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:08,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-21 16:39:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-21 16:39:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 58 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) [2022-11-21 16:39:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2022-11-21 16:39:08,719 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2022-11-21 16:39:08,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:08,719 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2022-11-21 16:39:08,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2022-11-21 16:39:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2022-11-21 16:39:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:39:08,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:08,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:08,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 16:39:08,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:08,921 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:08,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:08,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2090265384, now seen corresponding path program 1 times [2022-11-21 16:39:08,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:08,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847451676] [2022-11-21 16:39:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:08,922 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 [2022-11-21 16:39:08,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:08,924 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:08,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:09,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:39:09,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:09,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:09,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:09,067 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:39:09,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-21 16:39:09,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-21 16:39:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:09,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:09,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:09,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847451676] [2022-11-21 16:39:09,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847451676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:09,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:09,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:39:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221661341] [2022-11-21 16:39:09,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:09,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:39:09,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:09,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:39:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:09,165 INFO L87 Difference]: Start difference. First operand 59 states and 70 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) [2022-11-21 16:39:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:09,414 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2022-11-21 16:39:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:39:09,415 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 [2022-11-21 16:39:09,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:09,416 INFO L225 Difference]: With dead ends: 117 [2022-11-21 16:39:09,416 INFO L226 Difference]: Without dead ends: 117 [2022-11-21 16:39:09,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:39:09,417 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 82 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:09,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 144 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:39:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-21 16:39:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 87. [2022-11-21 16:39:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 76 states have (on average 1.355263157894737) internal successors, (103), 86 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2022-11-21 16:39:09,425 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 13 [2022-11-21 16:39:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:09,425 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2022-11-21 16:39:09,426 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) [2022-11-21 16:39:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2022-11-21 16:39:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 16:39:09,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:09,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:09,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:09,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:09,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:09,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1811674902, now seen corresponding path program 1 times [2022-11-21 16:39:09,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:09,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796916062] [2022-11-21 16:39:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:09,635 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 [2022-11-21 16:39:09,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:09,636 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:09,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:09,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:39:09,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:09,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:09,821 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2022-11-21 16:39:09,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 25 [2022-11-21 16:39:09,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-21 16:39:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:10,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:10,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:10,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796916062] [2022-11-21 16:39:10,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796916062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:10,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:10,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:39:10,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772827576] [2022-11-21 16:39:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:39:10,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:39:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:10,074 INFO L87 Difference]: Start difference. First operand 87 states and 103 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) [2022-11-21 16:39:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:10,299 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2022-11-21 16:39:10,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:39:10,302 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 [2022-11-21 16:39:10,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:10,303 INFO L225 Difference]: With dead ends: 91 [2022-11-21 16:39:10,303 INFO L226 Difference]: Without dead ends: 91 [2022-11-21 16:39:10,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:39:10,304 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:10,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 62 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:39:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-21 16:39:10,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2022-11-21 16:39:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.44) internal successors, (72), 60 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) [2022-11-21 16:39:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2022-11-21 16:39:10,310 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 13 [2022-11-21 16:39:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:10,311 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2022-11-21 16:39:10,311 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) [2022-11-21 16:39:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2022-11-21 16:39:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 16:39:10,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:10,312 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:10,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:10,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:10,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash -862198757, now seen corresponding path program 1 times [2022-11-21 16:39:10,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:10,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104751528] [2022-11-21 16:39:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:10,526 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 [2022-11-21 16:39:10,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:10,527 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:10,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:10,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:39:10,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:10,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:10,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:10,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104751528] [2022-11-21 16:39:10,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104751528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:10,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:10,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 16:39:10,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733535451] [2022-11-21 16:39:10,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:10,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:39:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:39:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:39:10,812 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:10,927 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2022-11-21 16:39:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:39:10,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2022-11-21 16:39:10,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:10,930 INFO L225 Difference]: With dead ends: 115 [2022-11-21 16:39:10,930 INFO L226 Difference]: Without dead ends: 115 [2022-11-21 16:39:10,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:39:10,931 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 135 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:10,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 189 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:10,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-21 16:39:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 92. [2022-11-21 16:39:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 91 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2022-11-21 16:39:10,939 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 17 [2022-11-21 16:39:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:10,939 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2022-11-21 16:39:10,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2022-11-21 16:39:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 16:39:10,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:10,941 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:10,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:11,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:11,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:11,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1873316007, now seen corresponding path program 1 times [2022-11-21 16:39:11,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:11,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137976699] [2022-11-21 16:39:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:11,155 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 [2022-11-21 16:39:11,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:11,156 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:11,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:11,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:39:11,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:11,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:11,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:11,330 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-21 16:39:11,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2022-11-21 16:39:11,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-21 16:39:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:11,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:12,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:39:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:12,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:12,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137976699] [2022-11-21 16:39:12,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137976699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:12,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:12,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-21 16:39:12,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554451921] [2022-11-21 16:39:12,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:12,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:39:12,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:39:12,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:39:12,362 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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) [2022-11-21 16:39:13,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:13,764 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2022-11-21 16:39:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:39:13,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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 17 [2022-11-21 16:39:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:13,766 INFO L225 Difference]: With dead ends: 126 [2022-11-21 16:39:13,767 INFO L226 Difference]: Without dead ends: 126 [2022-11-21 16:39:13,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:39:13,768 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 335 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:13,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 126 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 16:39:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-21 16:39:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2022-11-21 16:39:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 103 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2022-11-21 16:39:13,774 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 17 [2022-11-21 16:39:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:13,774 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2022-11-21 16:39:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 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) [2022-11-21 16:39:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2022-11-21 16:39:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 16:39:13,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:13,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:13,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:13,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:13,987 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:13,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1860319208, now seen corresponding path program 1 times [2022-11-21 16:39:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:13,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437193112] [2022-11-21 16:39:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:13,988 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 [2022-11-21 16:39:13,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:13,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:13,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:14,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:39:14,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:39:14,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:14,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:14,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437193112] [2022-11-21 16:39:14,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437193112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:14,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:14,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:39:14,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403293763] [2022-11-21 16:39:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:14,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:39:14,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:39:14,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:39:14,123 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:14,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:14,253 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2022-11-21 16:39:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:39:14,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-21 16:39:14,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:14,254 INFO L225 Difference]: With dead ends: 170 [2022-11-21 16:39:14,255 INFO L226 Difference]: Without dead ends: 170 [2022-11-21 16:39:14,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:14,255 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 68 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:14,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 127 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-21 16:39:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 131. [2022-11-21 16:39:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 130 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 155 transitions. [2022-11-21 16:39:14,270 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 155 transitions. Word has length 20 [2022-11-21 16:39:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:14,270 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 155 transitions. [2022-11-21 16:39:14,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 155 transitions. [2022-11-21 16:39:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 16:39:14,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:14,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:14,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 16:39:14,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:14,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:14,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1860318342, now seen corresponding path program 1 times [2022-11-21 16:39:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:14,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350537165] [2022-11-21 16:39:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:14,484 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 [2022-11-21 16:39:14,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:14,485 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:14,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:14,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:39:14,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:14,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:14,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:14,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350537165] [2022-11-21 16:39:14,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350537165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:14,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:14,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:39:14,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105266841] [2022-11-21 16:39:14,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:14,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:39:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:14,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:39:14,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:39:14,634 INFO L87 Difference]: Start difference. First operand 131 states and 155 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:14,739 INFO L93 Difference]: Finished difference Result 129 states and 153 transitions. [2022-11-21 16:39:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:39:14,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-21 16:39:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:14,741 INFO L225 Difference]: With dead ends: 129 [2022-11-21 16:39:14,741 INFO L226 Difference]: Without dead ends: 129 [2022-11-21 16:39:14,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:14,742 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 42 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:14,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 48 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-21 16:39:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-11-21 16:39:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.275) internal successors, (153), 128 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2022-11-21 16:39:14,747 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 20 [2022-11-21 16:39:14,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:14,748 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2022-11-21 16:39:14,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2022-11-21 16:39:14,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 16:39:14,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:14,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:14,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:14,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:14,961 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:14,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1860318341, now seen corresponding path program 1 times [2022-11-21 16:39:14,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:14,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522156138] [2022-11-21 16:39:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:14,962 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 [2022-11-21 16:39:14,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:14,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:14,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:15,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:39:15,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:15,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:15,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-11-21 16:39:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:15,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:15,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522156138] [2022-11-21 16:39:15,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522156138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:15,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:15,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-21 16:39:15,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809518980] [2022-11-21 16:39:15,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:15,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:39:15,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:15,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:39:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:39:15,621 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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) [2022-11-21 16:39:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:16,523 INFO L93 Difference]: Finished difference Result 219 states and 260 transitions. [2022-11-21 16:39:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:39:16,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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 20 [2022-11-21 16:39:16,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:16,525 INFO L225 Difference]: With dead ends: 219 [2022-11-21 16:39:16,526 INFO L226 Difference]: Without dead ends: 219 [2022-11-21 16:39:16,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:39:16,527 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 298 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:16,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 117 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 16:39:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-21 16:39:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 134. [2022-11-21 16:39:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 125 states have (on average 1.288) internal successors, (161), 133 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 161 transitions. [2022-11-21 16:39:16,533 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 161 transitions. Word has length 20 [2022-11-21 16:39:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:16,533 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 161 transitions. [2022-11-21 16:39:16,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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) [2022-11-21 16:39:16,533 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 161 transitions. [2022-11-21 16:39:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 16:39:16,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:16,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:16,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:16,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:16,754 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash 440503382, now seen corresponding path program 1 times [2022-11-21 16:39:16,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:16,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970526179] [2022-11-21 16:39:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:16,755 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 [2022-11-21 16:39:16,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:16,756 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:16,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:16,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:39:16,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:17,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:17,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:17,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970526179] [2022-11-21 16:39:17,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970526179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:17,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:17,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-21 16:39:17,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546990931] [2022-11-21 16:39:17,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:17,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:39:17,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:39:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:39:17,206 INFO L87 Difference]: Start difference. First operand 134 states and 161 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2022-11-21 16:39:17,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:17,622 INFO L93 Difference]: Finished difference Result 198 states and 236 transitions. [2022-11-21 16:39:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:39:17,627 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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 20 [2022-11-21 16:39:17,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:17,628 INFO L225 Difference]: With dead ends: 198 [2022-11-21 16:39:17,628 INFO L226 Difference]: Without dead ends: 198 [2022-11-21 16:39:17,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:39:17,629 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 283 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:17,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 163 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:39:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-21 16:39:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 107. [2022-11-21 16:39:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 106 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2022-11-21 16:39:17,643 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 20 [2022-11-21 16:39:17,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:17,645 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2022-11-21 16:39:17,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2022-11-21 16:39:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2022-11-21 16:39:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 16:39:17,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:17,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:17,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:17,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:17,854 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:17,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:17,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1835293711, now seen corresponding path program 1 times [2022-11-21 16:39:17,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:17,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100239001] [2022-11-21 16:39:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:17,855 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 [2022-11-21 16:39:17,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:17,856 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:17,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:17,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:39:17,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:17,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:17,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:17,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100239001] [2022-11-21 16:39:17,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100239001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:17,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:17,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:39:17,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946570015] [2022-11-21 16:39:17,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:17,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:39:17,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:17,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:39:17,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:39:17,990 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) [2022-11-21 16:39:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:18,082 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2022-11-21 16:39:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:39:18,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2022-11-21 16:39:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:18,084 INFO L225 Difference]: With dead ends: 106 [2022-11-21 16:39:18,084 INFO L226 Difference]: Without dead ends: 106 [2022-11-21 16:39:18,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:18,085 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:18,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 49 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-21 16:39:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-21 16:39:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 105 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2022-11-21 16:39:18,090 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 21 [2022-11-21 16:39:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:18,090 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2022-11-21 16:39:18,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2022-11-21 16:39:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 16:39:18,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:18,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:18,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-21 16:39:18,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:18,298 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:18,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1835293710, now seen corresponding path program 1 times [2022-11-21 16:39:18,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:18,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153754456] [2022-11-21 16:39:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:18,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:18,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:18,301 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:18,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:18,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:39:18,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:18,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:18,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-11-21 16:39:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:19,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:19,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153754456] [2022-11-21 16:39:19,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153754456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:19,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:19,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-21 16:39:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892069774] [2022-11-21 16:39:19,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:19,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:39:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:39:19,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:39:19,064 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:20,151 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2022-11-21 16:39:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:39:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-21 16:39:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:20,153 INFO L225 Difference]: With dead ends: 188 [2022-11-21 16:39:20,154 INFO L226 Difference]: Without dead ends: 188 [2022-11-21 16:39:20,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:39:20,155 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 470 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:20,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 128 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 16:39:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-21 16:39:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 109. [2022-11-21 16:39:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 101 states have (on average 1.297029702970297) internal successors, (131), 108 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2022-11-21 16:39:20,159 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 21 [2022-11-21 16:39:20,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:20,159 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2022-11-21 16:39:20,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:20,160 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2022-11-21 16:39:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 16:39:20,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:20,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:20,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:20,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:20,370 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:20,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1059572912, now seen corresponding path program 1 times [2022-11-21 16:39:20,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:20,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781957919] [2022-11-21 16:39:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:20,372 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 [2022-11-21 16:39:20,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:20,373 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:20,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:20,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:39:20,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:39:20,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:20,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:20,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781957919] [2022-11-21 16:39:20,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781957919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:20,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:20,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:39:20,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324205211] [2022-11-21 16:39:20,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:20,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:39:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:39:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:20,568 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:20,657 INFO L93 Difference]: Finished difference Result 138 states and 164 transitions. [2022-11-21 16:39:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:39:20,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-21 16:39:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:20,659 INFO L225 Difference]: With dead ends: 138 [2022-11-21 16:39:20,659 INFO L226 Difference]: Without dead ends: 138 [2022-11-21 16:39:20,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:39:20,660 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 52 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:20,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-21 16:39:20,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 127. [2022-11-21 16:39:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 126 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) [2022-11-21 16:39:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2022-11-21 16:39:20,674 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 22 [2022-11-21 16:39:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:20,674 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2022-11-21 16:39:20,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:20,675 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2022-11-21 16:39:20,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 16:39:20,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:20,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:20,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 16:39:20,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:20,887 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:20,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1546450642, now seen corresponding path program 1 times [2022-11-21 16:39:20,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:20,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60933148] [2022-11-21 16:39:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:20,889 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 [2022-11-21 16:39:20,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:20,890 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:20,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:21,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:39:21,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:21,048 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 16:39:21,048 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 16:39:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:39:21,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:21,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:21,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60933148] [2022-11-21 16:39:21,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60933148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:21,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:21,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:39:21,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548086194] [2022-11-21 16:39:21,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:21,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:39:21,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:21,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:39:21,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:39:21,096 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:21,180 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2022-11-21 16:39:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:39:21,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-21 16:39:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:21,181 INFO L225 Difference]: With dead ends: 126 [2022-11-21 16:39:21,181 INFO L226 Difference]: Without dead ends: 126 [2022-11-21 16:39:21,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:21,182 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 35 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:21,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 51 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-21 16:39:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-11-21 16:39:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 119 states have (on average 1.3109243697478992) internal successors, (156), 125 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2022-11-21 16:39:21,187 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 22 [2022-11-21 16:39:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:21,188 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2022-11-21 16:39:21,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2022-11-21 16:39:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 16:39:21,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:21,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:21,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 16:39:21,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:21,400 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1546450643, now seen corresponding path program 1 times [2022-11-21 16:39:21,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:21,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601653896] [2022-11-21 16:39:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:21,401 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 [2022-11-21 16:39:21,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:21,402 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:21,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:21,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:39:21,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:21,571 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-21 16:39:21,571 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-21 16:39:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:39:21,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:21,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:21,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601653896] [2022-11-21 16:39:21,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601653896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:21,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:21,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:39:21,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52984342] [2022-11-21 16:39:21,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:39:21,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:21,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:39:21,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:21,713 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:22,049 INFO L93 Difference]: Finished difference Result 234 states and 295 transitions. [2022-11-21 16:39:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:39:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-21 16:39:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:22,052 INFO L225 Difference]: With dead ends: 234 [2022-11-21 16:39:22,052 INFO L226 Difference]: Without dead ends: 234 [2022-11-21 16:39:22,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:39:22,053 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 109 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:22,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 121 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:39:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-21 16:39:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 186. [2022-11-21 16:39:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 179 states have (on average 1.329608938547486) internal successors, (238), 185 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 238 transitions. [2022-11-21 16:39:22,060 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 238 transitions. Word has length 22 [2022-11-21 16:39:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:22,060 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 238 transitions. [2022-11-21 16:39:22,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 238 transitions. [2022-11-21 16:39:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 16:39:22,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:22,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:22,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:22,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:22,275 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:22,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:22,275 INFO L85 PathProgramCache]: Analyzing trace with hash 728802193, now seen corresponding path program 1 times [2022-11-21 16:39:22,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:22,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022703476] [2022-11-21 16:39:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:22,276 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 [2022-11-21 16:39:22,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:22,277 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:22,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:22,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 16:39:22,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:22,554 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:39:22,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:39:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:39:22,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:22,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:22,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022703476] [2022-11-21 16:39:22,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022703476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:22,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:22,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:39:22,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745399599] [2022-11-21 16:39:22,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:22,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:39:22,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:22,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:39:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:39:22,899 INFO L87 Difference]: Start difference. First operand 186 states and 238 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:23,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:23,185 INFO L93 Difference]: Finished difference Result 224 states and 289 transitions. [2022-11-21 16:39:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:39:23,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-21 16:39:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:23,188 INFO L225 Difference]: With dead ends: 224 [2022-11-21 16:39:23,188 INFO L226 Difference]: Without dead ends: 224 [2022-11-21 16:39:23,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:39:23,189 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 111 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:23,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 54 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:39:23,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-21 16:39:23,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 156. [2022-11-21 16:39:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 155 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2022-11-21 16:39:23,195 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 22 [2022-11-21 16:39:23,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:23,196 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2022-11-21 16:39:23,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:23,196 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2022-11-21 16:39:23,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 16:39:23,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:23,197 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:23,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:23,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:23,410 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:23,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:23,411 INFO L85 PathProgramCache]: Analyzing trace with hash -591263241, now seen corresponding path program 2 times [2022-11-21 16:39:23,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:23,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328865874] [2022-11-21 16:39:23,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:39:23,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:23,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:23,413 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:23,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:23,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:39:23,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:39:23,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 16:39:23,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:23,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:23,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:39:23,612 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:39:23,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2022-11-21 16:39:23,643 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-21 16:39:23,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-11-21 16:39:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:24,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:25,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:39:25,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:39:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:39:25,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:25,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328865874] [2022-11-21 16:39:25,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328865874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:25,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:25,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-21 16:39:25,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273393412] [2022-11-21 16:39:25,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:25,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:39:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:25,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:39:25,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:39:25,954 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 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) [2022-11-21 16:39:32,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:32,120 INFO L93 Difference]: Finished difference Result 1004 states and 1343 transitions. [2022-11-21 16:39:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:39:32,122 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 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 23 [2022-11-21 16:39:32,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:32,125 INFO L225 Difference]: With dead ends: 1004 [2022-11-21 16:39:32,125 INFO L226 Difference]: Without dead ends: 1004 [2022-11-21 16:39:32,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2022-11-21 16:39:32,126 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1359 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:32,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 559 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 16:39:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-21 16:39:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 204. [2022-11-21 16:39:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 197 states have (on average 1.3350253807106598) internal successors, (263), 203 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 263 transitions. [2022-11-21 16:39:32,140 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 263 transitions. Word has length 23 [2022-11-21 16:39:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:32,141 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 263 transitions. [2022-11-21 16:39:32,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 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) [2022-11-21 16:39:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 263 transitions. [2022-11-21 16:39:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 16:39:32,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:32,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:32,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:32,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:32,354 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:32,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:32,354 INFO L85 PathProgramCache]: Analyzing trace with hash 88962737, now seen corresponding path program 1 times [2022-11-21 16:39:32,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686347314] [2022-11-21 16:39:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:32,355 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 [2022-11-21 16:39:32,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:32,356 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:32,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:32,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:39:32,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:39:32,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:32,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:32,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686347314] [2022-11-21 16:39:32,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686347314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:32,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:32,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:39:32,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309586859] [2022-11-21 16:39:32,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:32,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:39:32,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:32,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:39:32,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:39:32,478 INFO L87 Difference]: Start difference. First operand 204 states and 263 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2022-11-21 16:39:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:32,497 INFO L93 Difference]: Finished difference Result 216 states and 275 transitions. [2022-11-21 16:39:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:39:32,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 24 [2022-11-21 16:39:32,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:32,499 INFO L225 Difference]: With dead ends: 216 [2022-11-21 16:39:32,499 INFO L226 Difference]: Without dead ends: 216 [2022-11-21 16:39:32,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:39:32,500 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:32,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 63 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:39:32,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-21 16:39:32,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 209. [2022-11-21 16:39:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 202 states have (on average 1.3217821782178218) internal successors, (267), 208 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 267 transitions. [2022-11-21 16:39:32,506 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 267 transitions. Word has length 24 [2022-11-21 16:39:32,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:32,507 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 267 transitions. [2022-11-21 16:39:32,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2022-11-21 16:39:32,507 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 267 transitions. [2022-11-21 16:39:32,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:39:32,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:32,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:32,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:32,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:32,721 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:32,721 INFO L85 PathProgramCache]: Analyzing trace with hash -747793046, now seen corresponding path program 1 times [2022-11-21 16:39:32,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:32,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461239946] [2022-11-21 16:39:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:32,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:32,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:32,723 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:32,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:32,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:39:32,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:39:32,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:39:33,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:33,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461239946] [2022-11-21 16:39:33,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461239946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:33,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:33,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-21 16:39:33,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437282881] [2022-11-21 16:39:33,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:33,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:39:33,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:33,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:39:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:39:33,032 INFO L87 Difference]: Start difference. First operand 209 states and 267 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 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) [2022-11-21 16:39:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:33,173 INFO L93 Difference]: Finished difference Result 222 states and 272 transitions. [2022-11-21 16:39:33,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:39:33,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 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 25 [2022-11-21 16:39:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:33,175 INFO L225 Difference]: With dead ends: 222 [2022-11-21 16:39:33,175 INFO L226 Difference]: Without dead ends: 222 [2022-11-21 16:39:33,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:39:33,176 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 101 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:33,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 274 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:33,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-21 16:39:33,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2022-11-21 16:39:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 198 states have (on average 1.3080808080808082) internal successors, (259), 204 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 259 transitions. [2022-11-21 16:39:33,183 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 259 transitions. Word has length 25 [2022-11-21 16:39:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:33,183 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 259 transitions. [2022-11-21 16:39:33,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 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) [2022-11-21 16:39:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 259 transitions. [2022-11-21 16:39:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:39:33,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:33,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:33,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-21 16:39:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:33,399 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash -528938328, now seen corresponding path program 1 times [2022-11-21 16:39:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:33,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278127704] [2022-11-21 16:39:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:33,400 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 [2022-11-21 16:39:33,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:33,400 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:33,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:33,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:39:33,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:33,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:33,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:33,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278127704] [2022-11-21 16:39:33,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278127704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:33,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:33,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-11-21 16:39:33,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504760521] [2022-11-21 16:39:33,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:33,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 16:39:33,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 16:39:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:39:33,911 INFO L87 Difference]: Start difference. First operand 205 states and 259 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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) [2022-11-21 16:39:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:34,425 INFO L93 Difference]: Finished difference Result 265 states and 332 transitions. [2022-11-21 16:39:34,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:39:34,426 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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 25 [2022-11-21 16:39:34,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:34,427 INFO L225 Difference]: With dead ends: 265 [2022-11-21 16:39:34,427 INFO L226 Difference]: Without dead ends: 265 [2022-11-21 16:39:34,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:39:34,428 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 167 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:34,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 335 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:39:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-21 16:39:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 239. [2022-11-21 16:39:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 232 states have (on average 1.331896551724138) internal successors, (309), 238 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) [2022-11-21 16:39:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 309 transitions. [2022-11-21 16:39:34,435 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 309 transitions. Word has length 25 [2022-11-21 16:39:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:34,435 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 309 transitions. [2022-11-21 16:39:34,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 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) [2022-11-21 16:39:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 309 transitions. [2022-11-21 16:39:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-21 16:39:34,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:34,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:34,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:34,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:34,650 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:34,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:34,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1854162937, now seen corresponding path program 1 times [2022-11-21 16:39:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:34,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122216050] [2022-11-21 16:39:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:34,651 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 [2022-11-21 16:39:34,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:34,652 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:34,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:34,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:39:34,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:34,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:39:35,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:35,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122216050] [2022-11-21 16:39:35,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122216050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:35,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:35,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-21 16:39:35,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941592404] [2022-11-21 16:39:35,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:39:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:39:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:39:35,165 INFO L87 Difference]: Start difference. First operand 239 states and 309 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:35,651 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2022-11-21 16:39:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:39:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 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 27 [2022-11-21 16:39:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:35,653 INFO L225 Difference]: With dead ends: 246 [2022-11-21 16:39:35,653 INFO L226 Difference]: Without dead ends: 246 [2022-11-21 16:39:35,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:39:35,654 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 235 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:35,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 161 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:39:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-21 16:39:35,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 200. [2022-11-21 16:39:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.288659793814433) internal successors, (250), 199 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 250 transitions. [2022-11-21 16:39:35,669 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 250 transitions. Word has length 27 [2022-11-21 16:39:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:35,669 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 250 transitions. [2022-11-21 16:39:35,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 250 transitions. [2022-11-21 16:39:35,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:39:35,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:35,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:35,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:35,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:35,872 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:35,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1314778955, now seen corresponding path program 1 times [2022-11-21 16:39:35,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:35,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473441194] [2022-11-21 16:39:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:35,873 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 [2022-11-21 16:39:35,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:35,875 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:35,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:36,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:39:36,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:39:38,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:38,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:38,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473441194] [2022-11-21 16:39:38,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473441194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:38,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:38,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:39:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090076580] [2022-11-21 16:39:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:39:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:39:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2022-11-21 16:39:38,700 INFO L87 Difference]: Start difference. First operand 200 states and 250 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:40,708 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 [0] [2022-11-21 16:39:42,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:39:44,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:39:46,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:39:48,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:39:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:48,987 INFO L93 Difference]: Finished difference Result 240 states and 298 transitions. [2022-11-21 16:39:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:39:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-21 16:39:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:48,989 INFO L225 Difference]: With dead ends: 240 [2022-11-21 16:39:48,989 INFO L226 Difference]: Without dead ends: 238 [2022-11-21 16:39:48,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2022-11-21 16:39:48,990 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:48,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 6 Unknown, 0 Unchecked, 10.3s Time] [2022-11-21 16:39:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-21 16:39:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2022-11-21 16:39:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 230 states have (on average 1.2826086956521738) internal successors, (295), 235 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 295 transitions. [2022-11-21 16:39:48,996 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 295 transitions. Word has length 28 [2022-11-21 16:39:48,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:48,996 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 295 transitions. [2022-11-21 16:39:48,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 295 transitions. [2022-11-21 16:39:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:39:48,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:48,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:49,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-21 16:39:49,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:49,198 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:49,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1314778088, now seen corresponding path program 1 times [2022-11-21 16:39:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:49,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080209301] [2022-11-21 16:39:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:49,199 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 [2022-11-21 16:39:49,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:49,201 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:49,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:49,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:39:49,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:39:49,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:39:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:39:49,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:49,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080209301] [2022-11-21 16:39:49,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080209301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:39:49,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:39:49,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 16:39:49,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457737130] [2022-11-21 16:39:49,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:39:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:39:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:39:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:39:49,567 INFO L87 Difference]: Start difference. First operand 236 states and 295 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2022-11-21 16:39:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:39:49,730 INFO L93 Difference]: Finished difference Result 283 states and 344 transitions. [2022-11-21 16:39:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:39:49,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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 28 [2022-11-21 16:39:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:39:49,732 INFO L225 Difference]: With dead ends: 283 [2022-11-21 16:39:49,732 INFO L226 Difference]: Without dead ends: 254 [2022-11-21 16:39:49,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:39:49,733 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:39:49,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 215 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:39:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-21 16:39:49,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2022-11-21 16:39:49,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.2887931034482758) internal successors, (299), 237 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 299 transitions. [2022-11-21 16:39:49,740 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 299 transitions. Word has length 28 [2022-11-21 16:39:49,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:39:49,740 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 299 transitions. [2022-11-21 16:39:49,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2022-11-21 16:39:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 299 transitions. [2022-11-21 16:39:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:39:49,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:39:49,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:39:49,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:49,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:39:49,958 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:39:49,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:39:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1174230345, now seen corresponding path program 1 times [2022-11-21 16:39:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:39:49,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447590111] [2022-11-21 16:39:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:39:49,960 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 [2022-11-21 16:39:49,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:39:49,961 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:39:50,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:39:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:39:50,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 16:39:50,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:39:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:39:52,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:39:52,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:39:52,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447590111] [2022-11-21 16:39:52,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447590111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:39:52,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:39:52,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:39:52,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227445737] [2022-11-21 16:39:52,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:39:52,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:39:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:39:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:39:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2022-11-21 16:39:52,677 INFO L87 Difference]: Start difference. First operand 238 states and 299 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:39:54,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:39:56,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:39:58,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:40:00,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 16:40:02,711 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 [0] [2022-11-21 16:40:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:02,808 INFO L93 Difference]: Finished difference Result 237 states and 298 transitions. [2022-11-21 16:40:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:40:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-21 16:40:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:02,810 INFO L225 Difference]: With dead ends: 237 [2022-11-21 16:40:02,810 INFO L226 Difference]: Without dead ends: 220 [2022-11-21 16:40:02,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2022-11-21 16:40:02,811 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:02,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 60 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 5 Unknown, 0 Unchecked, 10.1s Time] [2022-11-21 16:40:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-21 16:40:02,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2022-11-21 16:40:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.266355140186916) internal successors, (271), 218 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 271 transitions. [2022-11-21 16:40:02,818 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 271 transitions. Word has length 28 [2022-11-21 16:40:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:02,819 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 271 transitions. [2022-11-21 16:40:02,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 271 transitions. [2022-11-21 16:40:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:40:02,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:02,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:02,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:03,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:40:03,035 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:40:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:03,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1252738474, now seen corresponding path program 1 times [2022-11-21 16:40:03,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:40:03,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563037800] [2022-11-21 16:40:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:03,037 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 [2022-11-21 16:40:03,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:40:03,039 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:40:03,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:03,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:40:03,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:40:03,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:40:03,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:40:03,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563037800] [2022-11-21 16:40:03,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563037800] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:03,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:40:03,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-21 16:40:03,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193574581] [2022-11-21 16:40:03,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:03,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 16:40:03,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:40:03,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 16:40:03,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:40:03,653 INFO L87 Difference]: Start difference. First operand 219 states and 271 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 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) [2022-11-21 16:40:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:04,099 INFO L93 Difference]: Finished difference Result 282 states and 341 transitions. [2022-11-21 16:40:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:40:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 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 28 [2022-11-21 16:40:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:04,101 INFO L225 Difference]: With dead ends: 282 [2022-11-21 16:40:04,101 INFO L226 Difference]: Without dead ends: 250 [2022-11-21 16:40:04,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:40:04,102 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 133 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:04,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 231 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:40:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-21 16:40:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 219. [2022-11-21 16:40:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.2616822429906542) internal successors, (270), 218 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 270 transitions. [2022-11-21 16:40:04,108 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 270 transitions. Word has length 28 [2022-11-21 16:40:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:04,109 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 270 transitions. [2022-11-21 16:40:04,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 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) [2022-11-21 16:40:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 270 transitions. [2022-11-21 16:40:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 16:40:04,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:04,110 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:04,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:04,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:40:04,323 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:40:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1138703979, now seen corresponding path program 2 times [2022-11-21 16:40:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:40:04,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965629546] [2022-11-21 16:40:04,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:40:04,324 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 [2022-11-21 16:40:04,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:40:04,325 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:40:04,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:04,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:40:04,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:40:04,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:40:04,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:40:04,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:05,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-11-21 16:40:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:40:05,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:40:05,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965629546] [2022-11-21 16:40:05,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965629546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:05,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:40:05,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-21 16:40:05,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153359619] [2022-11-21 16:40:05,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:05,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:40:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:40:05,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:40:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:40:05,613 INFO L87 Difference]: Start difference. First operand 219 states and 270 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 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) [2022-11-21 16:40:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:08,822 INFO L93 Difference]: Finished difference Result 529 states and 650 transitions. [2022-11-21 16:40:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:40:08,824 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 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 29 [2022-11-21 16:40:08,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:08,826 INFO L225 Difference]: With dead ends: 529 [2022-11-21 16:40:08,826 INFO L226 Difference]: Without dead ends: 529 [2022-11-21 16:40:08,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2022-11-21 16:40:08,827 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 670 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:08,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 300 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 16:40:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-11-21 16:40:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 233. [2022-11-21 16:40:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 228 states have (on average 1.2763157894736843) internal successors, (291), 232 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 291 transitions. [2022-11-21 16:40:08,839 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 291 transitions. Word has length 29 [2022-11-21 16:40:08,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:08,839 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 291 transitions. [2022-11-21 16:40:08,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 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) [2022-11-21 16:40:08,840 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 291 transitions. [2022-11-21 16:40:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 16:40:08,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:08,841 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:08,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-21 16:40:09,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:40:09,056 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:40:09,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:09,057 INFO L85 PathProgramCache]: Analyzing trace with hash 550362914, now seen corresponding path program 2 times [2022-11-21 16:40:09,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:40:09,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738737363] [2022-11-21 16:40:09,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:40:09,057 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 [2022-11-21 16:40:09,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:40:09,058 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:40:09,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:09,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:40:09,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:40:09,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 16:40:09,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:09,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:09,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:09,247 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-21 16:40:09,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2022-11-21 16:40:09,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-21 16:40:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:40:09,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:11,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:40:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:40:12,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:40:12,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738737363] [2022-11-21 16:40:12,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738737363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:12,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:40:12,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-21 16:40:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354825477] [2022-11-21 16:40:12,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:12,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:40:12,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:40:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:40:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:40:12,032 INFO L87 Difference]: Start difference. First operand 233 states and 291 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:22,274 INFO L93 Difference]: Finished difference Result 703 states and 904 transitions. [2022-11-21 16:40:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 16:40:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-21 16:40:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:22,278 INFO L225 Difference]: With dead ends: 703 [2022-11-21 16:40:22,278 INFO L226 Difference]: Without dead ends: 703 [2022-11-21 16:40:22,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=404, Invalid=786, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 16:40:22,279 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1003 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:22,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 424 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 16:40:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-11-21 16:40:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 281. [2022-11-21 16:40:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 276 states have (on average 1.2717391304347827) internal successors, (351), 280 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 351 transitions. [2022-11-21 16:40:22,290 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 351 transitions. Word has length 29 [2022-11-21 16:40:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:22,291 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 351 transitions. [2022-11-21 16:40:22,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 351 transitions. [2022-11-21 16:40:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-21 16:40:22,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:22,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:22,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:22,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:40:22,505 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:40:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:22,505 INFO L85 PathProgramCache]: Analyzing trace with hash -112944909, now seen corresponding path program 2 times [2022-11-21 16:40:22,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:40:22,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975875826] [2022-11-21 16:40:22,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:40:22,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:40:22,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:40:22,508 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:40:22,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:22,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:40:22,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:40:22,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 16:40:22,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:40:22,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:23,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-11-21 16:40:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:40:23,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:40:23,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975875826] [2022-11-21 16:40:23,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975875826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:23,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:40:23,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-21 16:40:23,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933187611] [2022-11-21 16:40:23,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:23,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:40:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:40:23,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:40:23,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:40:23,641 INFO L87 Difference]: Start difference. First operand 281 states and 351 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 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) [2022-11-21 16:40:25,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:25,728 INFO L93 Difference]: Finished difference Result 845 states and 1079 transitions. [2022-11-21 16:40:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:40:25,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 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) Word has length 32 [2022-11-21 16:40:25,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:25,732 INFO L225 Difference]: With dead ends: 845 [2022-11-21 16:40:25,733 INFO L226 Difference]: Without dead ends: 845 [2022-11-21 16:40:25,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:40:25,734 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 472 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:25,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 284 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 16:40:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-11-21 16:40:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 320. [2022-11-21 16:40:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.273015873015873) internal successors, (401), 319 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 401 transitions. [2022-11-21 16:40:25,747 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 401 transitions. Word has length 32 [2022-11-21 16:40:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:25,748 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 401 transitions. [2022-11-21 16:40:25,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 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) [2022-11-21 16:40:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 401 transitions. [2022-11-21 16:40:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-21 16:40:25,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:25,749 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:25,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:25,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:40:25,963 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:40:25,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1409463453, now seen corresponding path program 3 times [2022-11-21 16:40:25,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:40:25,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660032342] [2022-11-21 16:40:25,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:40:25,964 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 [2022-11-21 16:40:25,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:40:25,965 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:40:25,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:26,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 16:40:26,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:40:26,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 16:40:26,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:26,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:26,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:26,203 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-21 16:40:26,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2022-11-21 16:40:26,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-21 16:40:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 16:40:26,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:28,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:40:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 16:40:28,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:40:28,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660032342] [2022-11-21 16:40:28,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660032342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:28,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:40:28,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-21 16:40:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871018820] [2022-11-21 16:40:28,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:28,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:40:28,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:40:28,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:40:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:40:28,537 INFO L87 Difference]: Start difference. First operand 320 states and 401 transitions. Second operand has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:32,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:32,722 INFO L93 Difference]: Finished difference Result 643 states and 780 transitions. [2022-11-21 16:40:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:40:32,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-21 16:40:32,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:32,725 INFO L225 Difference]: With dead ends: 643 [2022-11-21 16:40:32,725 INFO L226 Difference]: Without dead ends: 643 [2022-11-21 16:40:32,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2022-11-21 16:40:32,725 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 586 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:32,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 228 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 16:40:32,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-21 16:40:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 396. [2022-11-21 16:40:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 391 states have (on average 1.3222506393861893) internal successors, (517), 395 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 517 transitions. [2022-11-21 16:40:32,738 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 517 transitions. Word has length 33 [2022-11-21 16:40:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:32,738 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 517 transitions. [2022-11-21 16:40:32,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 517 transitions. [2022-11-21 16:40:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-21 16:40:32,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:32,740 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:32,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:32,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:40:32,955 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:40:32,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:32,955 INFO L85 PathProgramCache]: Analyzing trace with hash -524293744, now seen corresponding path program 3 times [2022-11-21 16:40:32,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:40:32,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129458455] [2022-11-21 16:40:32,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:40:32,956 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 [2022-11-21 16:40:32,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:40:32,957 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:40:32,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:33,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-21 16:40:33,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:40:33,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-21 16:40:33,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:33,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:33,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:33,344 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:40:33,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2022-11-21 16:40:33,377 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-21 16:40:33,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-11-21 16:40:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:40:34,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:40:38,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:40:38,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129458455] [2022-11-21 16:40:38,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129458455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:38,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:40:38,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-21 16:40:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136189598] [2022-11-21 16:40:38,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:38,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:40:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:40:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:40:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:40:38,126 INFO L87 Difference]: Start difference. First operand 396 states and 517 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 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) [2022-11-21 16:40:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:43,282 INFO L93 Difference]: Finished difference Result 733 states and 971 transitions. [2022-11-21 16:40:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 16:40:43,285 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 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 40 [2022-11-21 16:40:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:43,287 INFO L225 Difference]: With dead ends: 733 [2022-11-21 16:40:43,288 INFO L226 Difference]: Without dead ends: 707 [2022-11-21 16:40:43,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 16:40:43,289 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 676 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:43,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 305 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 16:40:43,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-11-21 16:40:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 643. [2022-11-21 16:40:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 638 states have (on average 1.3495297805642634) internal successors, (861), 642 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 861 transitions. [2022-11-21 16:40:43,306 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 861 transitions. Word has length 40 [2022-11-21 16:40:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:43,307 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 861 transitions. [2022-11-21 16:40:43,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 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) [2022-11-21 16:40:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 861 transitions. [2022-11-21 16:40:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 16:40:43,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:43,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:43,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:43,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:40:43,523 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:40:43,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash 829184327, now seen corresponding path program 1 times [2022-11-21 16:40:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:40:43,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771445983] [2022-11-21 16:40:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:40:43,526 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 [2022-11-21 16:40:43,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:40:43,527 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:40:43,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:40:43,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:40:43,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:43,845 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:40:43,846 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:40:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:40:44,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:40:45,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:40:45,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771445983] [2022-11-21 16:40:45,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771445983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:45,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:40:45,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 16:40:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692628258] [2022-11-21 16:40:45,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:45,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:40:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:40:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:40:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:40:45,581 INFO L87 Difference]: Start difference. First operand 643 states and 861 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:47,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:40:47,042 INFO L93 Difference]: Finished difference Result 742 states and 983 transitions. [2022-11-21 16:40:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:40:47,043 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-21 16:40:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:40:47,047 INFO L225 Difference]: With dead ends: 742 [2022-11-21 16:40:47,047 INFO L226 Difference]: Without dead ends: 713 [2022-11-21 16:40:47,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:40:47,048 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 341 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:40:47,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 193 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 16:40:47,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-21 16:40:47,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 647. [2022-11-21 16:40:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 642 states have (on average 1.35202492211838) internal successors, (868), 646 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 868 transitions. [2022-11-21 16:40:47,060 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 868 transitions. Word has length 41 [2022-11-21 16:40:47,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:40:47,060 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 868 transitions. [2022-11-21 16:40:47,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:40:47,061 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 868 transitions. [2022-11-21 16:40:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-21 16:40:47,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:40:47,062 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-11-21 16:40:47,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:47,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:40:47,275 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:40:47,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:40:47,275 INFO L85 PathProgramCache]: Analyzing trace with hash -523698423, now seen corresponding path program 3 times [2022-11-21 16:40:47,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:40:47,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966051647] [2022-11-21 16:40:47,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:40:47,276 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 [2022-11-21 16:40:47,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:40:47,277 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:40:47,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:40:47,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-21 16:40:47,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:40:47,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 16:40:47,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:40:47,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:47,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:40:47,654 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 16:40:47,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2022-11-21 16:40:47,683 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-21 16:40:47,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-11-21 16:40:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:48,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:40:53,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:40:53,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:40:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:40:53,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:40:53,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966051647] [2022-11-21 16:40:53,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966051647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:40:53,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:40:53,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-11-21 16:40:53,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809592555] [2022-11-21 16:40:53,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:40:53,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 16:40:53,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:40:53,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 16:40:53,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2022-11-21 16:40:53,703 INFO L87 Difference]: Start difference. First operand 647 states and 868 transitions. Second operand has 30 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:04,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:41:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:29,354 INFO L93 Difference]: Finished difference Result 7849 states and 10851 transitions. [2022-11-21 16:41:29,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-21 16:41:29,356 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-21 16:41:29,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:29,369 INFO L225 Difference]: With dead ends: 7849 [2022-11-21 16:41:29,370 INFO L226 Difference]: Without dead ends: 7849 [2022-11-21 16:41:29,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=1166, Invalid=2494, Unknown=0, NotChecked=0, Total=3660 [2022-11-21 16:41:29,371 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 3692 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3692 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:29,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3692 Valid, 1981 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-21 16:41:29,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7849 states. [2022-11-21 16:41:29,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7849 to 743. [2022-11-21 16:41:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 738 states have (on average 1.3387533875338753) internal successors, (988), 742 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 988 transitions. [2022-11-21 16:41:29,425 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 988 transitions. Word has length 47 [2022-11-21 16:41:29,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:29,426 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 988 transitions. [2022-11-21 16:41:29,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 988 transitions. [2022-11-21 16:41:29,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-21 16:41:29,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:29,427 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:29,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:29,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:41:29,641 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:41:29,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1293342909, now seen corresponding path program 4 times [2022-11-21 16:41:29,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:41:29,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077526114] [2022-11-21 16:41:29,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:41:29,642 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 [2022-11-21 16:41:29,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:41:29,644 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:41:29,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:41:29,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:41:29,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:41:29,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:41:29,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:41:30,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:41:30,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:41:30,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077526114] [2022-11-21 16:41:30,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077526114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:30,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:41:30,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2022-11-21 16:41:30,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537196590] [2022-11-21 16:41:30,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:30,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 16:41:30,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:41:30,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 16:41:30,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-11-21 16:41:30,833 INFO L87 Difference]: Start difference. First operand 743 states and 988 transitions. Second operand has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:33,149 INFO L93 Difference]: Finished difference Result 1536 states and 1940 transitions. [2022-11-21 16:41:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 16:41:33,150 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-21 16:41:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:33,153 INFO L225 Difference]: With dead ends: 1536 [2022-11-21 16:41:33,153 INFO L226 Difference]: Without dead ends: 1400 [2022-11-21 16:41:33,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2022-11-21 16:41:33,154 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 691 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:33,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 857 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 16:41:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-11-21 16:41:33,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1041. [2022-11-21 16:41:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1036 states have (on average 1.3474903474903475) internal successors, (1396), 1040 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:33,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1396 transitions. [2022-11-21 16:41:33,175 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1396 transitions. Word has length 49 [2022-11-21 16:41:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:33,176 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1396 transitions. [2022-11-21 16:41:33,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1396 transitions. [2022-11-21 16:41:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-21 16:41:33,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:33,184 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:33,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:41:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:41:33,398 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:41:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1022969014, now seen corresponding path program 4 times [2022-11-21 16:41:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:41:33,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982806816] [2022-11-21 16:41:33,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:41:33,399 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 [2022-11-21 16:41:33,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:41:33,401 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:41:33,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:41:33,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:41:33,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:41:33,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 16:41:33,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:41:34,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:41:35,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:41:35,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982806816] [2022-11-21 16:41:35,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982806816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:35,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:41:35,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2022-11-21 16:41:35,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22707699] [2022-11-21 16:41:35,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:35,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 16:41:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:41:35,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 16:41:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-11-21 16:41:35,055 INFO L87 Difference]: Start difference. First operand 1041 states and 1396 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:36,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:41:36,809 INFO L93 Difference]: Finished difference Result 1742 states and 2343 transitions. [2022-11-21 16:41:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 16:41:36,810 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 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 52 [2022-11-21 16:41:36,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:41:36,814 INFO L225 Difference]: With dead ends: 1742 [2022-11-21 16:41:36,814 INFO L226 Difference]: Without dead ends: 1531 [2022-11-21 16:41:36,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 16:41:36,816 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 573 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:41:36,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 991 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:41:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2022-11-21 16:41:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1334. [2022-11-21 16:41:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1329 states have (on average 1.346877351392024) internal successors, (1790), 1333 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1790 transitions. [2022-11-21 16:41:36,841 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1790 transitions. Word has length 52 [2022-11-21 16:41:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:41:36,842 INFO L495 AbstractCegarLoop]: Abstraction has 1334 states and 1790 transitions. [2022-11-21 16:41:36,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:41:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1790 transitions. [2022-11-21 16:41:36,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-21 16:41:36,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:41:36,844 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:41:36,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-21 16:41:37,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:41:37,058 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:41:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:41:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash -199246284, now seen corresponding path program 3 times [2022-11-21 16:41:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:41:37,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346212007] [2022-11-21 16:41:37,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:41:37,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:41:37,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:41:37,061 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:41:37,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:41:37,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-21 16:41:37,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:41:37,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 16:41:37,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:41:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:37,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:41:37,482 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-21 16:41:37,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2022-11-21 16:41:37,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-21 16:41:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:41:38,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:41:43,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:41:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:41:43,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:41:43,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346212007] [2022-11-21 16:41:43,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346212007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:41:43,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:41:43,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2022-11-21 16:41:43,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645016915] [2022-11-21 16:41:43,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:41:43,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 16:41:43,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:41:43,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 16:41:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-21 16:41:43,924 INFO L87 Difference]: Start difference. First operand 1334 states and 1790 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:43,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:43:43,576 INFO L93 Difference]: Finished difference Result 8815 states and 12649 transitions. [2022-11-21 16:43:43,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 16:43:43,578 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 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 53 [2022-11-21 16:43:43,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:43:43,601 INFO L225 Difference]: With dead ends: 8815 [2022-11-21 16:43:43,602 INFO L226 Difference]: Without dead ends: 8815 [2022-11-21 16:43:43,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 116.3s TimeCoverageRelationStatistics Valid=1336, Invalid=2811, Unknown=13, NotChecked=0, Total=4160 [2022-11-21 16:43:43,603 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 4427 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4427 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:43:43,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4427 Valid, 1547 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-21 16:43:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2022-11-21 16:43:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 1526. [2022-11-21 16:43:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1521 states have (on average 1.3346482577251808) internal successors, (2030), 1525 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2030 transitions. [2022-11-21 16:43:43,681 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2030 transitions. Word has length 53 [2022-11-21 16:43:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:43:43,681 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2030 transitions. [2022-11-21 16:43:43,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2030 transitions. [2022-11-21 16:43:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 16:43:43,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:43:43,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:43:43,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:43:43,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:43:43,901 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:43:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash -878193103, now seen corresponding path program 2 times [2022-11-21 16:43:43,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:43:43,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503941093] [2022-11-21 16:43:43,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:43:43,902 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 [2022-11-21 16:43:43,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:43:43,903 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:43:43,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:43:44,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:43:44,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:43:44,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 16:43:44,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:43:44,204 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:43:44,204 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:43:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:43:45,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:43:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:43:47,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:43:47,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503941093] [2022-11-21 16:43:47,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503941093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:43:47,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:43:47,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2022-11-21 16:43:47,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525102620] [2022-11-21 16:43:47,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:43:47,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:43:47,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:43:47,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:43:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:43:47,764 INFO L87 Difference]: Start difference. First operand 1526 states and 2030 transitions. Second operand has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:43:51,265 INFO L93 Difference]: Finished difference Result 1798 states and 2383 transitions. [2022-11-21 16:43:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:43:51,267 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-21 16:43:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:43:51,273 INFO L225 Difference]: With dead ends: 1798 [2022-11-21 16:43:51,273 INFO L226 Difference]: Without dead ends: 1659 [2022-11-21 16:43:51,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2022-11-21 16:43:51,275 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 626 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:43:51,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 518 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 16:43:51,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2022-11-21 16:43:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1420. [2022-11-21 16:43:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1415 states have (on average 1.3385159010600707) internal successors, (1894), 1419 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1894 transitions. [2022-11-21 16:43:51,304 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1894 transitions. Word has length 56 [2022-11-21 16:43:51,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:43:51,305 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1894 transitions. [2022-11-21 16:43:51,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1894 transitions. [2022-11-21 16:43:51,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 16:43:51,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:43:51,307 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:43:51,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:43:51,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:43:51,523 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:43:51,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:51,524 INFO L85 PathProgramCache]: Analyzing trace with hash -564407577, now seen corresponding path program 5 times [2022-11-21 16:43:51,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:43:51,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342883010] [2022-11-21 16:43:51,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:43:51,524 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 [2022-11-21 16:43:51,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:43:51,525 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:43:51,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:43:51,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-21 16:43:51,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:43:51,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:43:51,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:43:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:43:52,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:43:53,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-11-21 16:43:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:43:54,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:43:54,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342883010] [2022-11-21 16:43:54,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342883010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:43:54,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:43:54,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-21 16:43:54,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525355914] [2022-11-21 16:43:54,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:43:54,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:43:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:43:54,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:43:54,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:43:54,436 INFO L87 Difference]: Start difference. First operand 1420 states and 1894 transitions. Second operand has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:02,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:02,210 INFO L93 Difference]: Finished difference Result 8349 states and 11585 transitions. [2022-11-21 16:44:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-21 16:44:02,211 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-21 16:44:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:44:02,227 INFO L225 Difference]: With dead ends: 8349 [2022-11-21 16:44:02,227 INFO L226 Difference]: Without dead ends: 8349 [2022-11-21 16:44:02,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2022-11-21 16:44:02,229 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 2277 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:44:02,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 962 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 16:44:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2022-11-21 16:44:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 1729. [2022-11-21 16:44:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1724 states have (on average 1.3491879350348028) internal successors, (2326), 1728 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2326 transitions. [2022-11-21 16:44:02,306 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2326 transitions. Word has length 56 [2022-11-21 16:44:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:44:02,306 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2326 transitions. [2022-11-21 16:44:02,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2326 transitions. [2022-11-21 16:44:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-21 16:44:02,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:44:02,320 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:02,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:44:02,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:44:02,536 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:44:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2040124660, now seen corresponding path program 5 times [2022-11-21 16:44:02,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:44:02,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401868380] [2022-11-21 16:44:02,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:44:02,537 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 [2022-11-21 16:44:02,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:44:02,538 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:44:02,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:44:02,979 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-21 16:44:02,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:44:02,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 16:44:02,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:44:03,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:44:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 29 proven. 94 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:44:06,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:44:06,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401868380] [2022-11-21 16:44:06,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401868380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:44:06,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:44:06,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 39 [2022-11-21 16:44:06,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191433055] [2022-11-21 16:44:06,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:44:06,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-21 16:44:06,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:44:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-21 16:44:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1256, Unknown=0, NotChecked=0, Total=1482 [2022-11-21 16:44:06,898 INFO L87 Difference]: Start difference. First operand 1729 states and 2326 transitions. Second operand has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:21,924 INFO L93 Difference]: Finished difference Result 5138 states and 6440 transitions. [2022-11-21 16:44:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-21 16:44:21,925 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 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 [2022-11-21 16:44:21,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:44:21,932 INFO L225 Difference]: With dead ends: 5138 [2022-11-21 16:44:21,933 INFO L226 Difference]: Without dead ends: 4713 [2022-11-21 16:44:21,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2110 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1689, Invalid=7241, Unknown=0, NotChecked=0, Total=8930 [2022-11-21 16:44:21,935 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 2397 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 3690 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:44:21,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2397 Valid, 3690 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 16:44:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2022-11-21 16:44:21,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 2469. [2022-11-21 16:44:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2464 states have (on average 1.37987012987013) internal successors, (3400), 2468 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3400 transitions. [2022-11-21 16:44:21,991 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3400 transitions. Word has length 61 [2022-11-21 16:44:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:44:21,991 INFO L495 AbstractCegarLoop]: Abstraction has 2469 states and 3400 transitions. [2022-11-21 16:44:21,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3400 transitions. [2022-11-21 16:44:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 16:44:21,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:44:21,994 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:22,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:22,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:44:22,208 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:44:22,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1288171396, now seen corresponding path program 6 times [2022-11-21 16:44:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:44:22,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316816422] [2022-11-21 16:44:22,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 16:44:22,209 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 [2022-11-21 16:44:22,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:44:22,210 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:44:22,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:44:22,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-21 16:44:22,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:44:22,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 16:44:22,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:22,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:44:22,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:44:22,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:44:22,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2022-11-21 16:44:22,524 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 16:44:22,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-21 16:44:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 1 proven. 76 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-21 16:44:23,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:44:27,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:44:27,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:44:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 1 proven. 76 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-21 16:44:27,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:44:27,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316816422] [2022-11-21 16:44:27,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316816422] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:44:27,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:44:27,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-21 16:44:27,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433003924] [2022-11-21 16:44:27,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:44:27,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 16:44:27,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:44:27,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 16:44:27,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-11-21 16:44:27,184 INFO L87 Difference]: Start difference. First operand 2469 states and 3400 transitions. Second operand has 20 states, 19 states have (on average 5.368421052631579) internal successors, (102), 20 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) [2022-11-21 16:44:32,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:44:34,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:44:36,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:44:36,637 INFO L93 Difference]: Finished difference Result 6768 states and 9530 transitions. [2022-11-21 16:44:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:44:36,638 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.368421052631579) internal successors, (102), 20 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 64 [2022-11-21 16:44:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:44:36,648 INFO L225 Difference]: With dead ends: 6768 [2022-11-21 16:44:36,649 INFO L226 Difference]: Without dead ends: 6768 [2022-11-21 16:44:36,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=442, Invalid=1118, Unknown=0, NotChecked=0, Total=1560 [2022-11-21 16:44:36,650 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 764 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:44:36,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 396 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 378 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-21 16:44:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2022-11-21 16:44:36,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6513. [2022-11-21 16:44:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6513 states, 6508 states have (on average 1.4222495390288876) internal successors, (9256), 6512 states have internal predecessors, (9256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:44:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6513 states to 6513 states and 9256 transitions. [2022-11-21 16:44:36,755 INFO L78 Accepts]: Start accepts. Automaton has 6513 states and 9256 transitions. Word has length 64 [2022-11-21 16:44:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:44:36,757 INFO L495 AbstractCegarLoop]: Abstraction has 6513 states and 9256 transitions. [2022-11-21 16:44:36,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.368421052631579) internal successors, (102), 20 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) [2022-11-21 16:44:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6513 states and 9256 transitions. [2022-11-21 16:44:36,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 16:44:36,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:44:36,761 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:44:36,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:44:36,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:44:36,973 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:44:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1564676590, now seen corresponding path program 6 times [2022-11-21 16:44:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:44:36,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748596087] [2022-11-21 16:44:36,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 16:44:36,975 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 [2022-11-21 16:44:36,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:44:36,976 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:44:36,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:44:37,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-21 16:44:37,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:44:37,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-21 16:44:37,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:37,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:44:37,545 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2022-11-21 16:44:37,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 25 [2022-11-21 16:44:37,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-21 16:44:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-21 16:44:38,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:44:43,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:44:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-21 16:44:43,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:44:43,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748596087] [2022-11-21 16:44:43,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748596087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:44:43,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:44:43,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-11-21 16:44:43,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803644888] [2022-11-21 16:44:43,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:44:43,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 16:44:43,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:44:43,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 16:44:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2022-11-21 16:44:43,987 INFO L87 Difference]: Start difference. First operand 6513 states and 9256 transitions. Second operand has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:11,890 INFO L93 Difference]: Finished difference Result 20033 states and 24937 transitions. [2022-11-21 16:45:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-21 16:45:11,892 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 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 69 [2022-11-21 16:45:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:11,913 INFO L225 Difference]: With dead ends: 20033 [2022-11-21 16:45:11,913 INFO L226 Difference]: Without dead ends: 20033 [2022-11-21 16:45:11,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=907, Invalid=2285, Unknown=0, NotChecked=0, Total=3192 [2022-11-21 16:45:11,914 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1600 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:11,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 689 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 16:45:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20033 states. [2022-11-21 16:45:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20033 to 7985. [2022-11-21 16:45:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7985 states, 7980 states have (on average 1.4536340852130325) internal successors, (11600), 7984 states have internal predecessors, (11600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7985 states to 7985 states and 11600 transitions. [2022-11-21 16:45:12,175 INFO L78 Accepts]: Start accepts. Automaton has 7985 states and 11600 transitions. Word has length 69 [2022-11-21 16:45:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:12,175 INFO L495 AbstractCegarLoop]: Abstraction has 7985 states and 11600 transitions. [2022-11-21 16:45:12,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 7985 states and 11600 transitions. [2022-11-21 16:45:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-21 16:45:12,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:12,178 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:12,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:45:12,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:45:12,394 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:45:12,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:12,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1457387987, now seen corresponding path program 3 times [2022-11-21 16:45:12,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:12,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143723027] [2022-11-21 16:45:12,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:45:12,395 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 [2022-11-21 16:45:12,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:12,396 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:45:12,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:45:13,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 16:45:13,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:45:13,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-21 16:45:13,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:13,180 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:45:13,181 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:45:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 16:45:14,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:45:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 16:45:20,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:20,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143723027] [2022-11-21 16:45:20,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143723027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:45:20,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:45:20,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2022-11-21 16:45:20,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365930953] [2022-11-21 16:45:20,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:45:20,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 16:45:20,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 16:45:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2022-11-21 16:45:20,937 INFO L87 Difference]: Start difference. First operand 7985 states and 11600 transitions. Second operand has 28 states, 27 states have (on average 5.185185185185185) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:36,518 INFO L93 Difference]: Finished difference Result 21417 states and 31162 transitions. [2022-11-21 16:45:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 16:45:36,520 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.185185185185185) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-21 16:45:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:36,545 INFO L225 Difference]: With dead ends: 21417 [2022-11-21 16:45:36,546 INFO L226 Difference]: Without dead ends: 21417 [2022-11-21 16:45:36,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=638, Invalid=2332, Unknown=0, NotChecked=0, Total=2970 [2022-11-21 16:45:36,547 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1694 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:36,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 975 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-21 16:45:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21417 states. [2022-11-21 16:45:36,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21417 to 17856. [2022-11-21 16:45:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17856 states, 17851 states have (on average 1.4603103467592853) internal successors, (26068), 17855 states have internal predecessors, (26068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17856 states to 17856 states and 26068 transitions. [2022-11-21 16:45:36,935 INFO L78 Accepts]: Start accepts. Automaton has 17856 states and 26068 transitions. Word has length 71 [2022-11-21 16:45:36,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:36,936 INFO L495 AbstractCegarLoop]: Abstraction has 17856 states and 26068 transitions. [2022-11-21 16:45:36,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.185185185185185) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:45:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 17856 states and 26068 transitions. [2022-11-21 16:45:36,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-21 16:45:36,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:36,944 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:36,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:45:37,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:45:37,162 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:45:37,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:37,162 INFO L85 PathProgramCache]: Analyzing trace with hash 171189742, now seen corresponding path program 4 times [2022-11-21 16:45:37,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:45:37,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537188170] [2022-11-21 16:45:37,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:45:37,163 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 [2022-11-21 16:45:37,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:45:37,164 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:45:37,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:45:37,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:45:37,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:45:37,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 16:45:37,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:37,760 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 16:45:37,760 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 16:45:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 16:45:39,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:45:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 16:45:45,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:45:45,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537188170] [2022-11-21 16:45:45,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537188170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:45:45,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:45:45,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2022-11-21 16:45:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676960206] [2022-11-21 16:45:45,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:45:45,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 16:45:45,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:45:45,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 16:45:45,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2022-11-21 16:45:45,723 INFO L87 Difference]: Start difference. First operand 17856 states and 26068 transitions. Second operand has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:01,220 INFO L93 Difference]: Finished difference Result 40950 states and 59719 transitions. [2022-11-21 16:46:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:46:01,221 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 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 82 [2022-11-21 16:46:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:01,272 INFO L225 Difference]: With dead ends: 40950 [2022-11-21 16:46:01,273 INFO L226 Difference]: Without dead ends: 40950 [2022-11-21 16:46:01,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=745, Invalid=2561, Unknown=0, NotChecked=0, Total=3306 [2022-11-21 16:46:01,275 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 616 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:01,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 562 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 16:46:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40950 states. [2022-11-21 16:46:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40950 to 23383. [2022-11-21 16:46:01,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23383 states, 23378 states have (on average 1.4678330053896826) internal successors, (34315), 23382 states have internal predecessors, (34315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23383 states to 23383 states and 34315 transitions. [2022-11-21 16:46:01,993 INFO L78 Accepts]: Start accepts. Automaton has 23383 states and 34315 transitions. Word has length 82 [2022-11-21 16:46:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:01,994 INFO L495 AbstractCegarLoop]: Abstraction has 23383 states and 34315 transitions. [2022-11-21 16:46:01,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 23383 states and 34315 transitions. [2022-11-21 16:46:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-21 16:46:02,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:02,013 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:02,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:46:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:46:02,228 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2022-11-21 16:46:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2147231533, now seen corresponding path program 4 times [2022-11-21 16:46:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:46:02,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80340456] [2022-11-21 16:46:02,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:46:02,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:46:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:46:02,230 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:46:02,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1893768a-dcf6-4b61-b29c-9dcb4ad0085a/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:46:02,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:46:02,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:46:02,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-21 16:46:02,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:02,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:46:02,858 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2022-11-21 16:46:02,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2022-11-21 16:46:02,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 16:46:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:06,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:46:24,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 16:46:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:46:24,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:46:24,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80340456] [2022-11-21 16:46:24,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80340456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:46:24,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:46:24,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2022-11-21 16:46:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722082697] [2022-11-21 16:46:24,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:46:24,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-21 16:46:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:46:24,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-21 16:46:24,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=855, Invalid=2451, Unknown=0, NotChecked=0, Total=3306 [2022-11-21 16:46:24,921 INFO L87 Difference]: Start difference. First operand 23383 states and 34315 transitions. Second operand has 58 states, 57 states have (on average 3.2982456140350878) internal successors, (188), 58 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:46:57,130 WARN L233 SmtUtils]: Spent 18.18s on a formula simplification that was a NOOP. DAG size: 258 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:47:45,740 WARN L233 SmtUtils]: Spent 46.60s on a formula simplification. DAG size of input: 254 DAG size of output: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:47:48,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:47:50,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:47:52,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:11,687 WARN L233 SmtUtils]: Spent 17.14s on a formula simplification that was a NOOP. DAG size: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:49:14,018 WARN L233 SmtUtils]: Spent 59.26s on a formula simplification. DAG size of input: 243 DAG size of output: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:49:16,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:49:18,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:49:20,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:49:35,864 WARN L233 SmtUtils]: Spent 12.47s on a formula simplification that was a NOOP. DAG size: 237 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:50:15,697 WARN L233 SmtUtils]: Spent 37.16s on a formula simplification. DAG size of input: 232 DAG size of output: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:50:18,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:20,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:22,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:36,304 WARN L233 SmtUtils]: Spent 11.55s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:51:12,011 WARN L233 SmtUtils]: Spent 32.78s on a formula simplification. DAG size of input: 222 DAG size of output: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:51:14,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:51:16,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:51:18,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:51:33,677 WARN L233 SmtUtils]: Spent 12.54s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:52:09,109 WARN L233 SmtUtils]: Spent 32.75s on a formula simplification. DAG size of input: 211 DAG size of output: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:52:11,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:52:13,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:52:15,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:52:26,853 WARN L233 SmtUtils]: Spent 9.33s on a formula simplification that was a NOOP. DAG size: 205 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:52:50,966 WARN L233 SmtUtils]: Spent 21.16s on a formula simplification. DAG size of input: 200 DAG size of output: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:52:53,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:52:55,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:53:04,257 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification that was a NOOP. DAG size: 194 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:53:28,416 WARN L233 SmtUtils]: Spent 21.67s on a formula simplification. DAG size of input: 189 DAG size of output: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:53:30,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:53:32,999 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 [] [2022-11-21 16:53:41,140 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)