./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8 --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 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 --- 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-2329fc7 [2022-12-13 21:20:08,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:20:08,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:20:08,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:20:08,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:20:08,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:20:08,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:20:08,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:20:08,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:20:08,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:20:08,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:20:08,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:20:08,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:20:08,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:20:08,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:20:08,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:20:08,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:20:08,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:20:08,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:20:08,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:20:08,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:20:08,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:20:08,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:20:08,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:20:08,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:20:08,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:20:08,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:20:08,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:20:08,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:20:08,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:20:08,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:20:08,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:20:08,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:20:08,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:20:08,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:20:08,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:20:08,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:20:08,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:20:08,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:20:08,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:20:08,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:20:08,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:20:08,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:20:08,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:20:08,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:20:08,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:20:08,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:20:08,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:20:08,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:20:08,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:20:08,598 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:20:08,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:20:08,599 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:20:08,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:20:08,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:20:08,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:20:08,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:20:08,600 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:20:08,600 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:20:08,600 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:20:08,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:20:08,600 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:20:08,600 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:20:08,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:20:08,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:20:08,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:20:08,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:20:08,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:20:08,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:20:08,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:20:08,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:20:08,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:20:08,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:20:08,603 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:20:08,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:20:08,603 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:20:08,603 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 [2022-12-13 21:20:08,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:20:08,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:20:08,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:20:08,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:20:08,830 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:20:08,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-12-13 21:20:11,378 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:20:11,561 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:20:11,561 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-12-13 21:20:11,578 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/data/5fe6bceb8/2f15be6f39644f958ae38db1d4900616/FLAG7b6c6eba6 [2022-12-13 21:20:11,935 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/data/5fe6bceb8/2f15be6f39644f958ae38db1d4900616 [2022-12-13 21:20:11,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:20:11,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:20:11,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:20:11,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:20:11,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:20:11,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:20:11" (1/1) ... [2022-12-13 21:20:11,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3552cdbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:11, skipping insertion in model container [2022-12-13 21:20:11,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:20:11" (1/1) ... [2022-12-13 21:20:11,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:20:11,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:20:12,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:20:12,171 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) [2022-12-13 21:20:12,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@198a543d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:12, skipping insertion in model container [2022-12-13 21:20:12,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:20:12,172 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 21:20:12,173 INFO L158 Benchmark]: Toolchain (without parser) took 234.23ms. Allocated memory is still 209.7MB. Free memory was 180.7MB in the beginning and 178.5MB in the end (delta: 2.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 21:20:12,174 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:20:12,174 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.24ms. Allocated memory is still 209.7MB. Free memory was 180.7MB in the beginning and 178.5MB in the end (delta: 2.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 21:20:12,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.24ms. Allocated memory is still 209.7MB. Free memory was 180.7MB in the beginning and 178.5MB in the end (delta: 2.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 533]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8 --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 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 --- 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-2329fc7 [2022-12-13 21:20:13,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:20:13,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:20:13,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:20:13,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:20:13,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:20:13,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:20:13,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:20:13,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:20:13,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:20:13,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:20:13,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:20:13,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:20:13,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:20:13,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:20:13,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:20:13,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:20:13,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:20:13,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:20:13,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:20:13,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:20:13,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:20:13,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:20:13,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:20:13,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:20:13,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:20:13,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:20:13,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:20:13,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:20:13,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:20:13,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:20:13,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:20:13,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:20:13,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:20:13,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:20:13,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:20:13,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:20:13,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:20:13,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:20:13,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:20:13,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:20:13,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 21:20:13,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:20:13,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:20:13,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:20:13,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:20:13,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:20:13,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:20:13,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:20:13,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:20:13,695 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:20:13,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:20:13,695 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:20:13,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:20:13,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:20:13,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:20:13,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:20:13,696 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:20:13,697 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:20:13,697 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:20:13,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:20:13,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:20:13,697 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:20:13,697 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:20:13,698 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:20:13,698 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:20:13,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:20:13,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:20:13,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:20:13,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:20:13,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:20:13,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:20:13,699 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:20:13,706 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:20:13,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:20:13,706 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:20:13,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:20:13,706 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:20:13,707 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:20:13,707 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 [2022-12-13 21:20:13,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:20:13,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:20:13,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:20:13,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:20:13,966 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:20:13,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-12-13 21:20:16,541 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:20:16,751 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:20:16,752 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-12-13 21:20:16,761 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/data/efeafd24e/255fc56c03de48fd9b3d0d27feb2c6d8/FLAG85e6f2444 [2022-12-13 21:20:16,772 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/data/efeafd24e/255fc56c03de48fd9b3d0d27feb2c6d8 [2022-12-13 21:20:16,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:20:16,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:20:16,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:20:16,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:20:16,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:20:16,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:20:16" (1/1) ... [2022-12-13 21:20:16,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cd4404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:16, skipping insertion in model container [2022-12-13 21:20:16,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:20:16" (1/1) ... [2022-12-13 21:20:16,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:20:16,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:20:16,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:20:17,008 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 21:20:17,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:20:17,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:20:17,049 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:20:17,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:20:17,103 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:20:17,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17 WrapperNode [2022-12-13 21:20:17,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:20:17,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:20:17,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:20:17,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:20:17,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,138 INFO L138 Inliner]: procedures = 117, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-12-13 21:20:17,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:20:17,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:20:17,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:20:17,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:20:17,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,164 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:20:17,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:20:17,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:20:17,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:20:17,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (1/1) ... [2022-12-13 21:20:17,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:20:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:20:17,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:20:17,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:20:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 21:20:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:20:17,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:20:17,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 21:20:17,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:20:17,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:20:17,335 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:20:17,337 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:20:17,595 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:20:17,601 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:20:17,601 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 21:20:17,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:20:17 BoogieIcfgContainer [2022-12-13 21:20:17,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:20:17,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:20:17,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:20:17,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:20:17,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:20:16" (1/3) ... [2022-12-13 21:20:17,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6f945e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:20:17, skipping insertion in model container [2022-12-13 21:20:17,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:20:17" (2/3) ... [2022-12-13 21:20:17,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6f945e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:20:17, skipping insertion in model container [2022-12-13 21:20:17,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:20:17" (3/3) ... [2022-12-13 21:20:17,609 INFO L112 eAbstractionObserver]: Analyzing ICFG array02-alloca-2.i [2022-12-13 21:20:17,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:20:17,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-12-13 21:20:17,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:20:17,662 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=PETRI_NET, 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;@3b8ca77f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:20:17,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 21:20:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 21:20:17,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:17,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:20:17,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:17,675 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-12-13 21:20:17,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:17,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591673262] [2022-12-13 21:20:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:17,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:17,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:17,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:17,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:17,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:20:17,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:17,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:20:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:17,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:20:17,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:17,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591673262] [2022-12-13 21:20:17,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591673262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:17,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:17,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:20:17,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375958696] [2022-12-13 21:20:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:17,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:20:17,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:20:17,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:17,839 INFO L87 Difference]: Start difference. First operand has 42 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:17,911 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-12-13 21:20:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:20:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-13 21:20:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:17,918 INFO L225 Difference]: With dead ends: 41 [2022-12-13 21:20:17,918 INFO L226 Difference]: Without dead ends: 39 [2022-12-13 21:20:17,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:20:17,922 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:17,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:20:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-13 21:20:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-13 21:20:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.72) internal successors, (43), 38 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) [2022-12-13 21:20:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-12-13 21:20:17,944 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 6 [2022-12-13 21:20:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:17,945 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-12-13 21:20:17,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-12-13 21:20:17,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 21:20:17,945 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:17,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:20:17,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:18,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:18,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:18,148 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-12-13 21:20:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:18,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170497933] [2022-12-13 21:20:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:18,150 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 [2022-12-13 21:20:18,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:18,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:18,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:18,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:20:18,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:18,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:20:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:18,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:20:18,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:18,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170497933] [2022-12-13 21:20:18,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170497933] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:18,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:18,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:20:18,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509600589] [2022-12-13 21:20:18,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:18,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:20:18,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:18,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:20:18,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:20:18,286 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:18,508 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2022-12-13 21:20:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:20:18,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-13 21:20:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:18,510 INFO L225 Difference]: With dead ends: 79 [2022-12-13 21:20:18,510 INFO L226 Difference]: Without dead ends: 79 [2022-12-13 21:20:18,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:20:18,511 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 45 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:18,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:20:18,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-13 21:20:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 42. [2022-12-13 21:20:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 41 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) [2022-12-13 21:20:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-12-13 21:20:18,517 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 6 [2022-12-13 21:20:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:18,517 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-12-13 21:20:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-12-13 21:20:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 21:20:18,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:18,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:20:18,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:18,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-12-13 21:20:18,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:18,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098185384] [2022-12-13 21:20:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:18,727 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 [2022-12-13 21:20:18,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:18,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:18,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:18,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:20:18,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:18,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:20:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:18,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:20:18,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098185384] [2022-12-13 21:20:18,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098185384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:18,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:18,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:20:18,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21789041] [2022-12-13 21:20:18,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:18,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:20:18,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:18,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:20:18,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:20:18,934 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:19,084 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2022-12-13 21:20:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:20:19,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-13 21:20:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:19,086 INFO L225 Difference]: With dead ends: 46 [2022-12-13 21:20:19,086 INFO L226 Difference]: Without dead ends: 46 [2022-12-13 21:20:19,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:20:19,087 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 45 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:19,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 61 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:20:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-13 21:20:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2022-12-13 21:20:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-12-13 21:20:19,092 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2022-12-13 21:20:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:19,092 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-12-13 21:20:19,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:19,092 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-12-13 21:20:19,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 21:20:19,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:19,093 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:19,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:20:19,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:19,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:19,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-12-13 21:20:19,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:19,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739776318] [2022-12-13 21:20:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:19,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:19,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:19,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:19,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:19,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:20:19,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:19,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:19,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:19,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739776318] [2022-12-13 21:20:19,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739776318] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:20:19,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:20:19,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 21:20:19,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762928437] [2022-12-13 21:20:19,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:20:19,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:20:19,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:20:19,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:20:19,504 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:19,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:19,580 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2022-12-13 21:20:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:20:19,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 21:20:19,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:19,581 INFO L225 Difference]: With dead ends: 77 [2022-12-13 21:20:19,581 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 21:20:19,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:20:19,582 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 164 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:19,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 177 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:20:19,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 21:20:19,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 47. [2022-12-13 21:20:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 46 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) [2022-12-13 21:20:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-12-13 21:20:19,585 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 10 [2022-12-13 21:20:19,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:19,585 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-12-13 21:20:19,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-12-13 21:20:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 21:20:19,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:19,586 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:19,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:20:19,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:19,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:19,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-12-13 21:20:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:19,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234434060] [2022-12-13 21:20:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:19,792 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 [2022-12-13 21:20:19,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:19,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:19,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:19,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:20:19,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:19,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:20:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:20,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:20,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:20,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234434060] [2022-12-13 21:20:20,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234434060] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:20:20,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:20:20,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 21:20:20,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922597755] [2022-12-13 21:20:20,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:20:20,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:20:20,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:20,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:20:20,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:20:20,440 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:21,390 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2022-12-13 21:20:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:20:21,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 21:20:21,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:21,393 INFO L225 Difference]: With dead ends: 119 [2022-12-13 21:20:21,393 INFO L226 Difference]: Without dead ends: 119 [2022-12-13 21:20:21,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2022-12-13 21:20:21,394 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 322 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:21,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 116 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 21:20:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-13 21:20:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 59. [2022-12-13 21:20:21,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2022-12-13 21:20:21,400 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 10 [2022-12-13 21:20:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:21,400 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2022-12-13 21:20:21,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2022-12-13 21:20:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 21:20:21,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:21,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:21,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:20:21,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:21,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash -680998148, now seen corresponding path program 1 times [2022-12-13 21:20:21,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:21,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001109987] [2022-12-13 21:20:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:21,605 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 [2022-12-13 21:20:21,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:21,608 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:21,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:21,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:20:21,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:21,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:20:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:20:21,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:20:21,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:21,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001109987] [2022-12-13 21:20:21,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001109987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:21,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:21,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:20:21,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940082988] [2022-12-13 21:20:21,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:21,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:20:21,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:21,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:20:21,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:20:21,676 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:21,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:21,756 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2022-12-13 21:20:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:20:21,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 21:20:21,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:21,758 INFO L225 Difference]: With dead ends: 53 [2022-12-13 21:20:21,758 INFO L226 Difference]: Without dead ends: 53 [2022-12-13 21:20:21,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:20:21,759 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 47 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:21,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:20:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-13 21:20:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-12-13 21:20:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 52 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) [2022-12-13 21:20:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2022-12-13 21:20:21,762 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 12 [2022-12-13 21:20:21,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:21,762 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2022-12-13 21:20:21,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2022-12-13 21:20:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 21:20:21,763 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:21,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:21,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:21,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:21,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:21,966 INFO L85 PathProgramCache]: Analyzing trace with hash -680998147, now seen corresponding path program 1 times [2022-12-13 21:20:21,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:21,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812192356] [2022-12-13 21:20:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:21,967 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 [2022-12-13 21:20:21,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:21,970 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:21,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:22,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:20:22,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:22,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:20:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:20:22,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:20:22,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:22,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812192356] [2022-12-13 21:20:22,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812192356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:22,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:22,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:20:22,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941233137] [2022-12-13 21:20:22,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:22,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:20:22,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:22,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:20:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:20:22,074 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:22,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:22,289 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2022-12-13 21:20:22,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:20:22,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 21:20:22,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:22,291 INFO L225 Difference]: With dead ends: 94 [2022-12-13 21:20:22,291 INFO L226 Difference]: Without dead ends: 94 [2022-12-13 21:20:22,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:20:22,291 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 113 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:22,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 99 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:20:22,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-12-13 21:20:22,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 67. [2022-12-13 21:20:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 1.305084745762712) internal successors, (77), 66 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:22,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2022-12-13 21:20:22,295 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 12 [2022-12-13 21:20:22,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:22,295 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2022-12-13 21:20:22,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:22,295 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2022-12-13 21:20:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 21:20:22,295 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:22,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:22,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:20:22,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:22,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:22,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:22,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025157, now seen corresponding path program 1 times [2022-12-13 21:20:22,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:22,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756124003] [2022-12-13 21:20:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:22,500 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 [2022-12-13 21:20:22,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:22,503 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:22,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:22,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:20:22,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:22,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:20:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:22,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:23,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:23,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756124003] [2022-12-13 21:20:23,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756124003] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:20:23,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:20:23,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-12-13 21:20:23,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148076239] [2022-12-13 21:20:23,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:23,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:20:23,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:23,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:20:23,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:20:23,014 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:23,221 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2022-12-13 21:20:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:20:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 21:20:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:23,223 INFO L225 Difference]: With dead ends: 67 [2022-12-13 21:20:23,223 INFO L226 Difference]: Without dead ends: 67 [2022-12-13 21:20:23,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:20:23,223 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 45 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:23,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 35 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:20:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-13 21:20:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2022-12-13 21:20:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2022-12-13 21:20:23,227 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 12 [2022-12-13 21:20:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:23,227 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2022-12-13 21:20:23,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2022-12-13 21:20:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 21:20:23,227 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:23,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:23,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 21:20:23,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:23,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash 363893421, now seen corresponding path program 1 times [2022-12-13 21:20:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:23,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186945848] [2022-12-13 21:20:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:23,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:23,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:23,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:23,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:23,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:20:23,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:20:23,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:20:23,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:23,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186945848] [2022-12-13 21:20:23,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186945848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:23,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:23,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:20:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93939558] [2022-12-13 21:20:23,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:23,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:20:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:20:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:20:23,501 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:23,600 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2022-12-13 21:20:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:20:23,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 21:20:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:23,601 INFO L225 Difference]: With dead ends: 84 [2022-12-13 21:20:23,601 INFO L226 Difference]: Without dead ends: 84 [2022-12-13 21:20:23,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:20:23,602 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 52 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:23,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 76 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:20:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-13 21:20:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2022-12-13 21:20:23,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 51 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) [2022-12-13 21:20:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2022-12-13 21:20:23,606 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 13 [2022-12-13 21:20:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:23,606 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2022-12-13 21:20:23,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:23,607 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2022-12-13 21:20:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 21:20:23,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:23,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:23,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:23,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:23,809 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:23,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:23,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1064957999, now seen corresponding path program 1 times [2022-12-13 21:20:23,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:23,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704447820] [2022-12-13 21:20:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:23,813 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 [2022-12-13 21:20:23,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:23,816 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:23,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:23,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:20:23,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:23,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:24,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:24,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704447820] [2022-12-13 21:20:24,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704447820] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:20:24,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:20:24,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-12-13 21:20:24,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028887284] [2022-12-13 21:20:24,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:20:24,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:20:24,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:20:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:20:24,050 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2022-12-13 21:20:24,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:24,292 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2022-12-13 21:20:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:20:24,293 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 13 [2022-12-13 21:20:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:24,294 INFO L225 Difference]: With dead ends: 86 [2022-12-13 21:20:24,294 INFO L226 Difference]: Without dead ends: 86 [2022-12-13 21:20:24,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:20:24,294 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 185 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:24,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 84 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:20:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-13 21:20:24,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 50. [2022-12-13 21:20:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-12-13 21:20:24,296 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 13 [2022-12-13 21:20:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:24,297 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-12-13 21:20:24,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2022-12-13 21:20:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-12-13 21:20:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 21:20:24,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:24,297 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:24,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:24,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:24,500 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:24,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:24,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2110205631, now seen corresponding path program 1 times [2022-12-13 21:20:24,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:24,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345471534] [2022-12-13 21:20:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:24,502 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 [2022-12-13 21:20:24,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:24,505 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:24,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:24,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:20:24,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:20:24,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:20:24,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:24,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345471534] [2022-12-13 21:20:24,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345471534] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:20:24,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:20:24,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 21:20:24,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607594938] [2022-12-13 21:20:24,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:20:24,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:20:24,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:24,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:20:24,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:20:24,717 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:24,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:24,826 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2022-12-13 21:20:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:20:24,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-13 21:20:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:24,828 INFO L225 Difference]: With dead ends: 69 [2022-12-13 21:20:24,828 INFO L226 Difference]: Without dead ends: 69 [2022-12-13 21:20:24,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:20:24,829 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:24,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 82 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:20:24,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-13 21:20:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2022-12-13 21:20:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 65 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2022-12-13 21:20:24,832 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 18 [2022-12-13 21:20:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:24,833 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2022-12-13 21:20:24,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:24,833 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2022-12-13 21:20:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 21:20:24,834 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:24,834 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:24,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:25,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:25,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:25,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:25,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1163693311, now seen corresponding path program 1 times [2022-12-13 21:20:25,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:25,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456214768] [2022-12-13 21:20:25,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:25,038 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 [2022-12-13 21:20:25,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:25,040 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:25,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:25,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 21:20:25,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:25,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:20:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:20:25,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:20:25,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:25,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456214768] [2022-12-13 21:20:25,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456214768] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:20:25,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:20:25,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-12-13 21:20:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125871120] [2022-12-13 21:20:25,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:20:25,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:20:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:20:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:20:25,889 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:26,805 INFO L93 Difference]: Finished difference Result 117 states and 133 transitions. [2022-12-13 21:20:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:20:26,806 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-13 21:20:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:26,806 INFO L225 Difference]: With dead ends: 117 [2022-12-13 21:20:26,807 INFO L226 Difference]: Without dead ends: 117 [2022-12-13 21:20:26,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 21:20:26,807 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 367 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:26,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 92 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:20:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-13 21:20:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2022-12-13 21:20:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 105 states have (on average 1.2) internal successors, (126), 107 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2022-12-13 21:20:26,810 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 18 [2022-12-13 21:20:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:26,810 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2022-12-13 21:20:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2022-12-13 21:20:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 21:20:26,811 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:26,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:26,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:27,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:27,012 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:27,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash -991865623, now seen corresponding path program 1 times [2022-12-13 21:20:27,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:27,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045165741] [2022-12-13 21:20:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:20:27,015 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 [2022-12-13 21:20:27,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:27,018 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:27,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:20:27,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:20:27,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:27,217 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc12#1.base_11| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_11|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc12#1.base_11| (_ bv0 1))))) is different from true [2022-12-13 21:20:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 21:20:27,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:20:27,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:27,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045165741] [2022-12-13 21:20:27,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045165741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:20:27,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:20:27,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:20:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226827432] [2022-12-13 21:20:27,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:20:27,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:20:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:20:27,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-12-13 21:20:27,219 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2022-12-13 21:20:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:27,275 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions. [2022-12-13 21:20:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:20:27,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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 19 [2022-12-13 21:20:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:27,276 INFO L225 Difference]: With dead ends: 107 [2022-12-13 21:20:27,276 INFO L226 Difference]: Without dead ends: 83 [2022-12-13 21:20:27,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-12-13 21:20:27,277 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:27,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 42 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 30 Unchecked, 0.0s Time] [2022-12-13 21:20:27,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-13 21:20:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-12-13 21:20:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 82 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2022-12-13 21:20:27,280 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 19 [2022-12-13 21:20:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:27,281 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2022-12-13 21:20:27,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2022-12-13 21:20:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2022-12-13 21:20:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 21:20:27,281 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:27,281 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-12-13 21:20:27,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 21:20:27,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:27,483 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:27,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:27,485 INFO L85 PathProgramCache]: Analyzing trace with hash 302966996, now seen corresponding path program 2 times [2022-12-13 21:20:27,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:27,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512637005] [2022-12-13 21:20:27,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:20:27,487 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 [2022-12-13 21:20:27,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:27,489 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:27,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:27,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:20:27,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:20:27,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:20:27,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:27,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:20:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:28,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:29,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:29,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512637005] [2022-12-13 21:20:29,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512637005] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:20:29,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:20:29,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-12-13 21:20:29,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716774871] [2022-12-13 21:20:29,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:20:29,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 21:20:29,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:29,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 21:20:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-12-13 21:20:29,070 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:32,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:20:34,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:34,863 INFO L93 Difference]: Finished difference Result 587 states and 669 transitions. [2022-12-13 21:20:34,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 21:20:34,864 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-13 21:20:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:34,866 INFO L225 Difference]: With dead ends: 587 [2022-12-13 21:20:34,866 INFO L226 Difference]: Without dead ends: 587 [2022-12-13 21:20:34,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2022-12-13 21:20:34,867 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 794 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:34,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 339 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 21:20:34,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-12-13 21:20:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 107. [2022-12-13 21:20:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 106 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2022-12-13 21:20:34,871 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 22 [2022-12-13 21:20:34,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:34,871 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2022-12-13 21:20:34,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2022-12-13 21:20:34,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 21:20:34,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:34,872 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:20:34,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:20:35,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:35,073 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1408555595, now seen corresponding path program 2 times [2022-12-13 21:20:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:35,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179764441] [2022-12-13 21:20:35,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:20:35,076 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 [2022-12-13 21:20:35,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:35,079 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:35,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:35,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:20:35,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:20:35,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 21:20:35,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:35,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:20:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:35,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:37,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179764441] [2022-12-13 21:20:37,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179764441] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:20:37,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:20:37,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2022-12-13 21:20:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485233659] [2022-12-13 21:20:37,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:20:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 21:20:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 21:20:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-12-13 21:20:37,460 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 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) [2022-12-13 21:20:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:20:41,868 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2022-12-13 21:20:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 21:20:41,870 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-12-13 21:20:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:20:41,870 INFO L225 Difference]: With dead ends: 208 [2022-12-13 21:20:41,870 INFO L226 Difference]: Without dead ends: 190 [2022-12-13 21:20:41,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 21:20:41,871 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 452 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:20:41,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 320 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 21:20:41,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-12-13 21:20:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 122. [2022-12-13 21:20:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.175) internal successors, (141), 121 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2022-12-13 21:20:41,875 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 36 [2022-12-13 21:20:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:20:41,876 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2022-12-13 21:20:41,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 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) [2022-12-13 21:20:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2022-12-13 21:20:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 21:20:41,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:20:41,877 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2022-12-13 21:20:41,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 21:20:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:20:42,078 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:20:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:20:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1048882662, now seen corresponding path program 3 times [2022-12-13 21:20:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:20:42,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354408870] [2022-12-13 21:20:42,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:20:42,080 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 [2022-12-13 21:20:42,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:20:42,081 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:20:42,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:20:42,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-13 21:20:42,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:20:42,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 21:20:42,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:20:42,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:20:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:42,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:20:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:20:45,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:20:45,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354408870] [2022-12-13 21:20:45,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354408870] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:20:45,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:20:45,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-12-13 21:20:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276307433] [2022-12-13 21:20:45,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:20:45,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 21:20:45,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:20:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 21:20:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-12-13 21:20:45,823 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:20:53,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:21:11,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:21:11,281 INFO L93 Difference]: Finished difference Result 1323 states and 1508 transitions. [2022-12-13 21:21:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 21:21:11,283 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-12-13 21:21:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:21:11,285 INFO L225 Difference]: With dead ends: 1323 [2022-12-13 21:21:11,285 INFO L226 Difference]: Without dead ends: 1323 [2022-12-13 21:21:11,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=1194, Invalid=2588, Unknown=0, NotChecked=0, Total=3782 [2022-12-13 21:21:11,286 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 3500 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3500 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:21:11,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3500 Valid, 1539 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-12-13 21:21:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-12-13 21:21:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 170. [2022-12-13 21:21:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 1.1964285714285714) internal successors, (201), 169 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 201 transitions. [2022-12-13 21:21:11,292 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 201 transitions. Word has length 46 [2022-12-13 21:21:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:21:11,292 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 201 transitions. [2022-12-13 21:21:11,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 201 transitions. [2022-12-13 21:21:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 21:21:11,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:21:11,293 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:21:11,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:21:11,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:21:11,495 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:21:11,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:21:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash 873306578, now seen corresponding path program 3 times [2022-12-13 21:21:11,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:21:11,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281740383] [2022-12-13 21:21:11,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:21:11,499 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 [2022-12-13 21:21:11,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:21:11,502 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:21:11,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:21:11,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 21:21:11,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:21:11,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 21:21:11,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:21:11,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:21:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 46 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 21:21:13,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:21:27,359 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:21:34,153 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:21:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 21:21:39,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:21:39,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281740383] [2022-12-13 21:21:39,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281740383] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:21:39,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:21:39,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2022-12-13 21:21:39,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978145088] [2022-12-13 21:21:39,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:21:39,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 21:21:39,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:21:39,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 21:21:39,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=587, Unknown=2, NotChecked=0, Total=702 [2022-12-13 21:21:39,028 INFO L87 Difference]: Start difference. First operand 170 states and 201 transitions. Second operand has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 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) [2022-12-13 21:21:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:21:43,368 INFO L93 Difference]: Finished difference Result 206 states and 240 transitions. [2022-12-13 21:21:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:21:43,370 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-12-13 21:21:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:21:43,370 INFO L225 Difference]: With dead ends: 206 [2022-12-13 21:21:43,371 INFO L226 Difference]: Without dead ends: 175 [2022-12-13 21:21:43,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=213, Invalid=907, Unknown=2, NotChecked=0, Total=1122 [2022-12-13 21:21:43,371 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 262 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:21:43,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 250 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 21:21:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-12-13 21:21:43,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2022-12-13 21:21:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 1.1904761904761905) internal successors, (200), 169 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 200 transitions. [2022-12-13 21:21:43,374 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 200 transitions. Word has length 46 [2022-12-13 21:21:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:21:43,374 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 200 transitions. [2022-12-13 21:21:43,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 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) [2022-12-13 21:21:43,374 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 200 transitions. [2022-12-13 21:21:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 21:21:43,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:21:43,375 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:21:43,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:21:43,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:21:43,576 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:21:43,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:21:43,577 INFO L85 PathProgramCache]: Analyzing trace with hash 82156500, now seen corresponding path program 4 times [2022-12-13 21:21:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:21:43,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958949308] [2022-12-13 21:21:43,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:21:43,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:21:43,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:21:43,582 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:21:43,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:21:43,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:21:43,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:21:43,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 21:21:43,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:21:43,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:21:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 21:21:45,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:21:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 21:21:48,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:21:48,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958949308] [2022-12-13 21:21:48,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958949308] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:21:48,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:21:48,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-12-13 21:21:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572087819] [2022-12-13 21:21:48,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:21:48,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 21:21:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:21:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 21:21:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-13 21:21:48,667 INFO L87 Difference]: Start difference. First operand 170 states and 200 transitions. Second operand has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 20 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) [2022-12-13 21:21:53,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:21:56,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:21:56,703 INFO L93 Difference]: Finished difference Result 303 states and 351 transitions. [2022-12-13 21:21:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 21:21:56,705 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-12-13 21:21:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:21:56,706 INFO L225 Difference]: With dead ends: 303 [2022-12-13 21:21:56,706 INFO L226 Difference]: Without dead ends: 303 [2022-12-13 21:21:56,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 21:21:56,707 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 792 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:21:56,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 298 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 21:21:56,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-12-13 21:21:56,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 239. [2022-12-13 21:21:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.1772151898734178) internal successors, (279), 238 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:21:56,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 279 transitions. [2022-12-13 21:21:56,710 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 279 transitions. Word has length 48 [2022-12-13 21:21:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:21:56,711 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 279 transitions. [2022-12-13 21:21:56,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 20 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) [2022-12-13 21:21:56,711 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 279 transitions. [2022-12-13 21:21:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 21:21:56,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:21:56,711 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:21:56,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-12-13 21:21:56,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:21:56,913 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:21:56,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:21:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1193800553, now seen corresponding path program 5 times [2022-12-13 21:21:56,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:21:56,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830204569] [2022-12-13 21:21:56,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:21:56,916 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 [2022-12-13 21:21:56,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:21:56,918 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:21:56,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:21:57,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-12-13 21:21:57,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:21:57,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 21:21:57,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:21:57,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:21:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 132 proven. 155 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 21:21:59,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:22:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:22:08,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:22:08,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830204569] [2022-12-13 21:22:08,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830204569] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:22:08,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:22:08,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 35 [2022-12-13 21:22:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864505186] [2022-12-13 21:22:08,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:22:08,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 21:22:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:22:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 21:22:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 21:22:08,020 INFO L87 Difference]: Start difference. First operand 239 states and 279 transitions. Second operand has 35 states, 35 states have (on average 4.2) internal successors, (147), 35 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:22:35,542 INFO L93 Difference]: Finished difference Result 465 states and 532 transitions. [2022-12-13 21:22:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 21:22:35,544 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.2) internal successors, (147), 35 states have internal predecessors, (147), 0 states have call successors, (0), 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 80 [2022-12-13 21:22:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:22:35,544 INFO L225 Difference]: With dead ends: 465 [2022-12-13 21:22:35,544 INFO L226 Difference]: Without dead ends: 418 [2022-12-13 21:22:35,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=858, Invalid=4112, Unknown=0, NotChecked=0, Total=4970 [2022-12-13 21:22:35,546 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1373 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:22:35,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1281 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-12-13 21:22:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-12-13 21:22:35,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 254. [2022-12-13 21:22:35,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.1706349206349207) internal successors, (295), 253 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) [2022-12-13 21:22:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 295 transitions. [2022-12-13 21:22:35,550 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 295 transitions. Word has length 80 [2022-12-13 21:22:35,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:22:35,550 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 295 transitions. [2022-12-13 21:22:35,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.2) internal successors, (147), 35 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 295 transitions. [2022-12-13 21:22:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 21:22:35,550 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:22:35,551 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:22:35,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 21:22:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:22:35,752 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:22:35,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:35,753 INFO L85 PathProgramCache]: Analyzing trace with hash 625249264, now seen corresponding path program 6 times [2022-12-13 21:22:35,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:22:35,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864774474] [2022-12-13 21:22:35,754 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:22:35,754 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 [2022-12-13 21:22:35,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:22:35,757 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:22:35,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:22:36,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-12-13 21:22:36,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:22:36,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 21:22:36,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:22:36,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:22:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 260 proven. 28 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-12-13 21:22:40,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:22:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 228 proven. 60 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-12-13 21:22:53,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:22:53,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864774474] [2022-12-13 21:22:53,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864774474] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:22:53,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:22:53,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-12-13 21:22:53,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942455845] [2022-12-13 21:22:53,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:22:53,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 21:22:53,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:22:53,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 21:22:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 21:22:53,039 INFO L87 Difference]: Start difference. First operand 254 states and 295 transitions. Second operand has 36 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:22:59,450 INFO L93 Difference]: Finished difference Result 316 states and 364 transitions. [2022-12-13 21:22:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 21:22:59,452 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 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 90 [2022-12-13 21:22:59,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:22:59,452 INFO L225 Difference]: With dead ends: 316 [2022-12-13 21:22:59,452 INFO L226 Difference]: Without dead ends: 254 [2022-12-13 21:22:59,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=455, Invalid=1615, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 21:22:59,453 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 161 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:22:59,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 483 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 21:22:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-12-13 21:22:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-12-13 21:22:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.1666666666666667) internal successors, (294), 253 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 294 transitions. [2022-12-13 21:22:59,456 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 294 transitions. Word has length 90 [2022-12-13 21:22:59,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:22:59,456 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 294 transitions. [2022-12-13 21:22:59,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:22:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 294 transitions. [2022-12-13 21:22:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 21:22:59,457 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:22:59,457 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2022-12-13 21:22:59,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-13 21:22:59,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:22:59,658 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:22:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:22:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2084926986, now seen corresponding path program 4 times [2022-12-13 21:22:59,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:22:59,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035109550] [2022-12-13 21:22:59,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:22:59,659 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 [2022-12-13 21:22:59,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:22:59,660 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:22:59,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:22:59,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:22:59,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:22:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 21:22:59,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:22:59,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:23:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:05,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:23:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:23:23,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:23:23,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035109550] [2022-12-13 21:23:23,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035109550] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:23:23,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:23:23,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2022-12-13 21:23:23,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180811813] [2022-12-13 21:23:23,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:23:23,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-13 21:23:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:23:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-13 21:23:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=854, Invalid=2452, Unknown=0, NotChecked=0, Total=3306 [2022-12-13 21:23:23,978 INFO L87 Difference]: Start difference. First operand 254 states and 294 transitions. Second operand has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:23:57,143 WARN L233 SmtUtils]: Spent 12.71s on a formula simplification that was a NOOP. DAG size: 256 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:24:35,792 WARN L233 SmtUtils]: Spent 36.85s on a formula simplification. DAG size of input: 252 DAG size of output: 252 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:24:38,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:24:40,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:24:42,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:24:54,207 WARN L233 SmtUtils]: Spent 10.18s on a formula simplification that was a NOOP. DAG size: 246 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:25:27,992 WARN L233 SmtUtils]: Spent 31.63s on a formula simplification. DAG size of input: 241 DAG size of output: 241 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:25:30,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:25:32,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:25:34,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:25:44,361 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:26:16,135 WARN L233 SmtUtils]: Spent 29.45s on a formula simplification. DAG size of input: 230 DAG size of output: 230 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:26:18,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:26:20,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:26:22,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:26:36,356 WARN L233 SmtUtils]: Spent 12.07s on a formula simplification that was a NOOP. DAG size: 225 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:26:55,356 WARN L233 SmtUtils]: Spent 16.78s on a formula simplification. DAG size of input: 220 DAG size of output: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:26:57,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:26:59,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:27:01,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:27:12,572 WARN L233 SmtUtils]: Spent 8.71s on a formula simplification that was a NOOP. DAG size: 214 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:27:29,816 WARN L233 SmtUtils]: Spent 14.80s on a formula simplification. DAG size of input: 209 DAG size of output: 209 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:27:32,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:27:34,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:27:36,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:27:47,776 WARN L233 SmtUtils]: Spent 9.84s on a formula simplification that was a NOOP. DAG size: 203 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:28:07,868 WARN L233 SmtUtils]: Spent 17.97s on a formula simplification. DAG size of input: 198 DAG size of output: 198 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:28:10,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:28:12,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:28:14,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:28:26,348 WARN L233 SmtUtils]: Spent 10.52s on a formula simplification that was a NOOP. DAG size: 192 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:28:45,352 WARN L233 SmtUtils]: Spent 16.82s on a formula simplification. DAG size of input: 187 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:28:47,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:28:49,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:28:51,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:28:59,346 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:29:17,928 WARN L233 SmtUtils]: Spent 16.40s on a formula simplification. DAG size of input: 177 DAG size of output: 177 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:29:20,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:29:22,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:29:41,898 WARN L233 SmtUtils]: Spent 10.67s on a formula simplification. DAG size of input: 166 DAG size of output: 166 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:29:44,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:29:46,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:30:02,794 WARN L233 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 155 DAG size of output: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:30:05,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:30:07,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:30:23,079 WARN L233 SmtUtils]: Spent 8.98s on a formula simplification. DAG size of input: 144 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:30:25,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:30:27,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:30:39,587 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 134 DAG size of output: 134 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:30:41,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:30:43,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:30:54,913 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 123 DAG size of output: 123 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:30:57,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:30:59,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:31:10,056 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 112 DAG size of output: 112 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:31:12,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:31:14,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:31:25,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:31:27,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:31:36,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:31:43,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:31:50,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:31:56,167 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 [] [2022-12-13 21:32:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:05,007 INFO L93 Difference]: Finished difference Result 6137 states and 7005 transitions. [2022-12-13 21:32:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-12-13 21:32:05,009 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-12-13 21:32:05,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:05,017 INFO L225 Difference]: With dead ends: 6137 [2022-12-13 21:32:05,017 INFO L226 Difference]: Without dead ends: 6137 [2022-12-13 21:32:05,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4087 ImplicationChecksByTransitivity, 423.2s TimeCoverageRelationStatistics Valid=4684, Invalid=10568, Unknown=0, NotChecked=0, Total=15252 [2022-12-13 21:32:05,020 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 11620 mSDsluCounter, 5171 mSDsCounter, 0 mSdLazyCounter, 6174 mSolverCounterSat, 65 mSolverCounterUnsat, 41 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11620 SdHoareTripleChecker+Valid, 5378 SdHoareTripleChecker+Invalid, 6280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 6174 IncrementalHoareTripleChecker+Invalid, 41 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:05,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11620 Valid, 5378 Invalid, 6280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 6174 Invalid, 41 Unknown, 0 Unchecked, 112.9s Time] [2022-12-13 21:32:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6137 states. [2022-12-13 21:32:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 350. [2022-12-13 21:32:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 348 states have (on average 1.1896551724137931) internal successors, (414), 349 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:32:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 414 transitions. [2022-12-13 21:32:05,044 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 414 transitions. Word has length 94 [2022-12-13 21:32:05,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:05,044 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 414 transitions. [2022-12-13 21:32:05,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.263157894736842) internal successors, (186), 58 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:32:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 414 transitions. [2022-12-13 21:32:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 21:32:05,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:05,045 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:05,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-13 21:32:05,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:05,247 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:32:05,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash -132332109, now seen corresponding path program 7 times [2022-12-13 21:32:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:05,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786052840] [2022-12-13 21:32:05,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:32:05,250 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 [2022-12-13 21:32:05,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:05,253 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:32:05,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:32:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:05,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 21:32:05,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:05,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:32:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 176 proven. 185 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 21:32:08,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:32:19,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:32:19,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786052840] [2022-12-13 21:32:19,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786052840] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:19,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:19,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 39 [2022-12-13 21:32:19,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793544813] [2022-12-13 21:32:19,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:19,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 21:32:19,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:32:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 21:32:19,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1301, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 21:32:19,774 INFO L87 Difference]: Start difference. First operand 350 states and 414 transitions. Second operand has 39 states, 39 states have (on average 4.333333333333333) internal successors, (169), 39 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:32:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:51,978 INFO L93 Difference]: Finished difference Result 607 states and 702 transitions. [2022-12-13 21:32:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 21:32:51,980 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.333333333333333) internal successors, (169), 39 states have internal predecessors, (169), 0 states have call successors, (0), 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 94 [2022-12-13 21:32:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:51,981 INFO L225 Difference]: With dead ends: 607 [2022-12-13 21:32:51,981 INFO L226 Difference]: Without dead ends: 529 [2022-12-13 21:32:51,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=989, Invalid=5017, Unknown=0, NotChecked=0, Total=6006 [2022-12-13 21:32:51,982 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1148 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:51,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 1731 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2022-12-13 21:32:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-12-13 21:32:51,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 364. [2022-12-13 21:32:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 362 states have (on average 1.1850828729281768) internal successors, (429), 363 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:32:51,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 429 transitions. [2022-12-13 21:32:51,986 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 429 transitions. Word has length 94 [2022-12-13 21:32:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:51,987 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 429 transitions. [2022-12-13 21:32:51,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.333333333333333) internal successors, (169), 39 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:32:51,987 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 429 transitions. [2022-12-13 21:32:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 21:32:51,987 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:51,987 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:52,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-13 21:32:52,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:32:52,188 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:32:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:52,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1612923912, now seen corresponding path program 8 times [2022-12-13 21:32:52,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:32:52,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126946586] [2022-12-13 21:32:52,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:32:52,189 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 [2022-12-13 21:32:52,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:32:52,190 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:32:52,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:32:52,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:32:52,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:52,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 21:32:52,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:52,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:32:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 56 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:32:56,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:33:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:33:13,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:33:13,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126946586] [2022-12-13 21:33:13,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126946586] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:33:13,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:33:13,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2022-12-13 21:33:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224453073] [2022-12-13 21:33:13,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:33:13,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 21:33:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:33:13,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 21:33:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1990, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 21:33:13,389 INFO L87 Difference]: Start difference. First operand 364 states and 429 transitions. Second operand has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:09,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:34:09,406 INFO L93 Difference]: Finished difference Result 883 states and 1011 transitions. [2022-12-13 21:34:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-12-13 21:34:09,408 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-12-13 21:34:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:34:09,409 INFO L225 Difference]: With dead ends: 883 [2022-12-13 21:34:09,409 INFO L226 Difference]: Without dead ends: 514 [2022-12-13 21:34:09,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=2609, Invalid=13141, Unknown=0, NotChecked=0, Total=15750 [2022-12-13 21:34:09,412 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 2146 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 6056 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 4699 SdHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 6056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:34:09,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2146 Valid, 4699 Invalid, 6070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 6056 Invalid, 0 Unknown, 0 Unchecked, 25.7s Time] [2022-12-13 21:34:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-12-13 21:34:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 350. [2022-12-13 21:34:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 348 states have (on average 1.1781609195402298) internal successors, (410), 349 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 410 transitions. [2022-12-13 21:34:09,417 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 410 transitions. Word has length 100 [2022-12-13 21:34:09,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:34:09,417 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 410 transitions. [2022-12-13 21:34:09,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:09,417 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 410 transitions. [2022-12-13 21:34:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 21:34:09,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:34:09,418 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:34:09,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:34:09,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:34:09,619 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:34:09,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:09,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1616397950, now seen corresponding path program 9 times [2022-12-13 21:34:09,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:34:09,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569691446] [2022-12-13 21:34:09,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:34:09,623 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 [2022-12-13 21:34:09,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:34:09,626 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:34:09,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:34:10,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-13 21:34:10,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:34:10,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 21:34:10,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:10,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:34:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-13 21:34:13,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:34:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-13 21:34:25,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:34:25,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569691446] [2022-12-13 21:34:25,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569691446] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:34:25,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:34:25,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-12-13 21:34:25,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040376442] [2022-12-13 21:34:25,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:34:25,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 21:34:25,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:34:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 21:34:25,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 21:34:25,616 INFO L87 Difference]: Start difference. First operand 350 states and 410 transitions. Second operand has 34 states, 33 states have (on average 4.303030303030303) internal successors, (142), 34 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:43,927 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:34:45,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:34:47,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:34:57,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:35:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:35:27,269 INFO L93 Difference]: Finished difference Result 657 states and 759 transitions. [2022-12-13 21:35:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 21:35:27,272 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.303030303030303) internal successors, (142), 34 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-12-13 21:35:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:35:27,273 INFO L225 Difference]: With dead ends: 657 [2022-12-13 21:35:27,273 INFO L226 Difference]: Without dead ends: 657 [2022-12-13 21:35:27,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=1547, Invalid=4459, Unknown=0, NotChecked=0, Total=6006 [2022-12-13 21:35:27,274 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 2674 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:35:27,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 1386 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1399 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-12-13 21:35:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-12-13 21:35:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 503. [2022-12-13 21:35:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 501 states have (on average 1.1676646706586826) internal successors, (585), 502 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 585 transitions. [2022-12-13 21:35:27,281 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 585 transitions. Word has length 108 [2022-12-13 21:35:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:35:27,281 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 585 transitions. [2022-12-13 21:35:27,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.303030303030303) internal successors, (142), 34 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 585 transitions. [2022-12-13 21:35:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 21:35:27,284 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:35:27,284 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:27,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:35:27,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:35:27,484 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 21:35:27,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:27,485 INFO L85 PathProgramCache]: Analyzing trace with hash -921168597, now seen corresponding path program 10 times [2022-12-13 21:35:27,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:35:27,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223662106] [2022-12-13 21:35:27,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:35:27,486 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 [2022-12-13 21:35:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:35:27,487 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 21:35:27,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf3e3d28-e717-46c0-9c8a-f57cb94367e9/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:35:27,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:35:27,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:27,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 21:35:27,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:27,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:35:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 644 proven. 813 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-12-13 21:35:34,382 INFO L328 TraceCheckSpWp]: Computing backward predicates...