./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R --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 0176377c3fa036d8b42b70bf41d842353f196a854b997aa0bf5f176a7ad1942b --- 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-38b53e6 [2022-11-25 18:12:29,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:12:29,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:12:29,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:12:29,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:12:29,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:12:29,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:12:29,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:12:29,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:12:29,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:12:29,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:12:29,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:12:29,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:12:29,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:12:29,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:12:29,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:12:29,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:12:29,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:12:29,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:12:29,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:12:29,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:12:29,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:12:29,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:12:29,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:12:29,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:12:29,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:12:29,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:12:29,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:12:29,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:12:29,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:12:29,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:12:29,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:12:29,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:12:29,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:12:29,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:12:29,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:12:29,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:12:29,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:12:29,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:12:29,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:12:29,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:12:29,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:12:29,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:12:29,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:12:29,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:12:29,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:12:29,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:12:29,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:12:29,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:12:29,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:12:29,900 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:12:29,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:12:29,901 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:12:29,901 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:12:29,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:12:29,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:12:29,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:12:29,902 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:12:29,902 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:12:29,902 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:12:29,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:12:29,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:12:29,903 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:12:29,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:12:29,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:12:29,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:12:29,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:12:29,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:12:29,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:12:29,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:12:29,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:12:29,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:12:29,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:12:29,905 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:12:29,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:12:29,906 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_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0176377c3fa036d8b42b70bf41d842353f196a854b997aa0bf5f176a7ad1942b [2022-11-25 18:12:30,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:12:30,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:12:30,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:12:30,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:12:30,263 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:12:30,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i [2022-11-25 18:12:33,350 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:12:33,664 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:12:33,664 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/sv-benchmarks/c/memsafety/test-memleak_nexttime.i [2022-11-25 18:12:33,680 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/data/67cce9ec5/0289f0e8eb77475e889f30b7c0f58c4d/FLAG3254daf19 [2022-11-25 18:12:33,696 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/data/67cce9ec5/0289f0e8eb77475e889f30b7c0f58c4d [2022-11-25 18:12:33,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:12:33,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:12:33,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:12:33,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:12:33,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:12:33,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:33" (1/1) ... [2022-11-25 18:12:33,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eccc8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:33, skipping insertion in model container [2022-11-25 18:12:33,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:33" (1/1) ... [2022-11-25 18:12:33,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:12:33,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:12:34,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:12:34,134 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 18:12:34,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4621aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:34, skipping insertion in model container [2022-11-25 18:12:34,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:12:34,135 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:12:34,139 INFO L158 Benchmark]: Toolchain (without parser) took 437.96ms. Allocated memory is still 199.2MB. Free memory was 154.5MB in the beginning and 142.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 18:12:34,140 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:12:34,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.86ms. Allocated memory is still 199.2MB. Free memory was 154.5MB in the beginning and 142.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 18:12:34,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.86ms. Allocated memory is still 199.2MB. Free memory was 154.5MB in the beginning and 142.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 643]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R --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 0176377c3fa036d8b42b70bf41d842353f196a854b997aa0bf5f176a7ad1942b --- 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-38b53e6 [2022-11-25 18:12:36,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:12:36,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:12:36,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:12:36,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:12:36,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:12:36,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:12:36,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:12:36,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:12:36,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:12:36,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:12:36,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:12:36,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:12:36,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:12:36,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:12:36,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:12:36,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:12:36,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:12:36,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:12:36,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:12:36,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:12:36,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:12:36,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:12:36,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:12:36,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:12:36,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:12:36,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:12:36,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:12:36,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:12:36,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:12:36,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:12:36,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:12:36,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:12:36,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:12:36,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:12:36,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:12:36,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:12:36,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:12:36,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:12:36,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:12:36,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:12:36,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:12:36,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:12:36,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:12:36,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:12:36,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:12:36,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:12:36,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:12:36,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:12:36,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:12:36,598 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:12:36,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:12:36,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:12:36,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:12:36,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:12:36,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:12:36,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:12:36,601 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:12:36,601 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:12:36,602 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:12:36,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:12:36,602 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:12:36,603 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:12:36,603 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:12:36,603 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:12:36,603 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:12:36,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:12:36,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:12:36,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:12:36,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:12:36,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:12:36,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:12:36,606 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:12:36,606 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:12:36,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:12:36,607 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:12:36,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:12:36,607 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:12:36,608 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_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0176377c3fa036d8b42b70bf41d842353f196a854b997aa0bf5f176a7ad1942b [2022-11-25 18:12:37,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:12:37,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:12:37,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:12:37,046 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:12:37,047 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:12:37,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/memsafety/test-memleak_nexttime.i [2022-11-25 18:12:40,458 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:12:40,841 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:12:40,843 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/sv-benchmarks/c/memsafety/test-memleak_nexttime.i [2022-11-25 18:12:40,867 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/data/ca4fb1e8e/6049872763d3414b9cbe727e9dfbe325/FLAG4bd90d815 [2022-11-25 18:12:40,882 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/data/ca4fb1e8e/6049872763d3414b9cbe727e9dfbe325 [2022-11-25 18:12:40,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:12:40,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:12:40,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:12:40,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:12:40,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:12:40,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:40" (1/1) ... [2022-11-25 18:12:40,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452184d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:40, skipping insertion in model container [2022-11-25 18:12:40,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:40" (1/1) ... [2022-11-25 18:12:40,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:12:40,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:12:41,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:12:41,333 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:12:41,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:12:41,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:12:41,370 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:12:41,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:12:41,469 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:12:41,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41 WrapperNode [2022-11-25 18:12:41,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:12:41,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:12:41,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:12:41,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:12:41,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,535 INFO L138 Inliner]: procedures = 182, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2022-11-25 18:12:41,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:12:41,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:12:41,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:12:41,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:12:41,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:12:41,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:12:41,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:12:41,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:12:41,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (1/1) ... [2022-11-25 18:12:41,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:12:41,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:12:41,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:12:41,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:12:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 18:12:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 18:12:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-25 18:12:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-25 18:12:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 18:12:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:12:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:12:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:12:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 18:12:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:12:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 18:12:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:12:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-25 18:12:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:12:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:12:41,814 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:12:41,816 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:12:41,821 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 18:12:42,210 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:12:42,229 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:12:42,235 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:12:42,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:12:42 BoogieIcfgContainer [2022-11-25 18:12:42,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:12:42,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:12:42,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:12:42,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:12:42,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:12:40" (1/3) ... [2022-11-25 18:12:42,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270fd368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:12:42, skipping insertion in model container [2022-11-25 18:12:42,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:41" (2/3) ... [2022-11-25 18:12:42,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270fd368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:12:42, skipping insertion in model container [2022-11-25 18:12:42,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:12:42" (3/3) ... [2022-11-25 18:12:42,262 INFO L112 eAbstractionObserver]: Analyzing ICFG test-memleak_nexttime.i [2022-11-25 18:12:42,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:12:42,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-25 18:12:42,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:12:42,371 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;@eec94db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:12:42,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-25 18:12:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 30 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:42,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 18:12:42,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:42,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 18:12:42,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:42,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:42,396 INFO L85 PathProgramCache]: Analyzing trace with hash 44752, now seen corresponding path program 1 times [2022-11-25 18:12:42,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:42,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622921719] [2022-11-25 18:12:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:42,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:42,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:42,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:42,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 18:12:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:42,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:12:42,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:42,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:12:42,873 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-25 18:12:42,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-25 18:12:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:42,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:42,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:42,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622921719] [2022-11-25 18:12:42,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622921719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:42,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:42,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:12:42,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231676811] [2022-11-25 18:12:42,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:42,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:12:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:43,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:12:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:12:43,015 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 30 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:43,122 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-11-25 18:12:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:12:43,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 18:12:43,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:43,135 INFO L225 Difference]: With dead ends: 39 [2022-11-25 18:12:43,135 INFO L226 Difference]: Without dead ends: 37 [2022-11-25 18:12:43,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:12:43,140 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:43,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 46 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:12:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-25 18:12:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-25 18:12:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-11-25 18:12:43,178 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 3 [2022-11-25 18:12:43,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:43,180 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-11-25 18:12:43,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-11-25 18:12:43,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 18:12:43,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:43,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 18:12:43,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 18:12:43,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:43,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:43,383 INFO L85 PathProgramCache]: Analyzing trace with hash 44753, now seen corresponding path program 1 times [2022-11-25 18:12:43,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:43,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539072882] [2022-11-25 18:12:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:43,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:43,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:43,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:43,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 18:12:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:43,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:12:43,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:43,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 18:12:43,517 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 18:12:43,518 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 18:12:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:43,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:43,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:43,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539072882] [2022-11-25 18:12:43,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539072882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:43,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:43,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:12:43,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295065124] [2022-11-25 18:12:43,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:43,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:12:43,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:43,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:12:43,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:43,558 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:43,614 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-11-25 18:12:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:12:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 18:12:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:43,618 INFO L225 Difference]: With dead ends: 36 [2022-11-25 18:12:43,618 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 18:12:43,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:43,621 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:43,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 46 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:12:43,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 18:12:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-25 18:12:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 31 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-11-25 18:12:43,633 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 3 [2022-11-25 18:12:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:43,633 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-11-25 18:12:43,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-11-25 18:12:43,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 18:12:43,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:43,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 18:12:43,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:43,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:43,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:43,852 INFO L85 PathProgramCache]: Analyzing trace with hash 44754, now seen corresponding path program 1 times [2022-11-25 18:12:43,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:43,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739957349] [2022-11-25 18:12:43,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:43,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:43,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:43,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:43,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 18:12:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:43,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:12:43,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:44,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:12:44,095 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-11-25 18:12:44,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 39 [2022-11-25 18:12:44,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-25 18:12:44,137 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:12:44,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:12:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:44,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:44,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:44,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739957349] [2022-11-25 18:12:44,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739957349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:44,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:44,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:12:44,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813314382] [2022-11-25 18:12:44,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:44,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:12:44,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:44,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:12:44,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:12:44,210 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:44,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:44,367 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-25 18:12:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:12:44,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 18:12:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:44,368 INFO L225 Difference]: With dead ends: 35 [2022-11-25 18:12:44,368 INFO L226 Difference]: Without dead ends: 35 [2022-11-25 18:12:44,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:12:44,377 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:44,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 57 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:12:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-25 18:12:44,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-25 18:12:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-11-25 18:12:44,382 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 3 [2022-11-25 18:12:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:44,382 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-11-25 18:12:44,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-11-25 18:12:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 18:12:44,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:44,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 18:12:44,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:44,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:44,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash 44755, now seen corresponding path program 1 times [2022-11-25 18:12:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:44,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138906341] [2022-11-25 18:12:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:44,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:44,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:44,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:44,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 18:12:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:44,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:12:44,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:44,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-11-25 18:12:44,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:12:44,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 18:12:44,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-25 18:12:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:44,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:44,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:44,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138906341] [2022-11-25 18:12:44,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138906341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:44,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:44,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:12:44,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233552545] [2022-11-25 18:12:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:44,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:12:44,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:12:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:44,707 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:44,749 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-11-25 18:12:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:12:44,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 18:12:44,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:44,751 INFO L225 Difference]: With dead ends: 34 [2022-11-25 18:12:44,751 INFO L226 Difference]: Without dead ends: 34 [2022-11-25 18:12:44,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:44,752 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:44,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:12:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-25 18:12:44,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-25 18:12:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-25 18:12:44,757 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 3 [2022-11-25 18:12:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:44,758 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-25 18:12:44,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:44,758 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-25 18:12:44,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 18:12:44,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:44,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:44,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:44,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:44,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:44,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash 658165672, now seen corresponding path program 1 times [2022-11-25 18:12:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:44,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280171431] [2022-11-25 18:12:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:44,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:44,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:44,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 18:12:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:45,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:12:45,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:45,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:45,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:45,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280171431] [2022-11-25 18:12:45,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280171431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:45,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:45,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:12:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635677330] [2022-11-25 18:12:45,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:45,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:12:45,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:12:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:12:45,078 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:45,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:45,141 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-11-25 18:12:45,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:12:45,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-25 18:12:45,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:45,143 INFO L225 Difference]: With dead ends: 42 [2022-11-25 18:12:45,143 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 18:12:45,143 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 [2022-11-25 18:12:45,144 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:45,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 77 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:12:45,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 18:12:45,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-25 18:12:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-11-25 18:12:45,149 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 12 [2022-11-25 18:12:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:45,149 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-11-25 18:12:45,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-11-25 18:12:45,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 18:12:45,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:45,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:45,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:45,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:45,362 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:45,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:45,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1349907399, now seen corresponding path program 1 times [2022-11-25 18:12:45,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:45,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878742735] [2022-11-25 18:12:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:45,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:45,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:45,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:45,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 18:12:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:45,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:12:45,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:45,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:12:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:45,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:45,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878742735] [2022-11-25 18:12:45,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878742735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:12:45,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:12:45,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 18:12:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246455881] [2022-11-25 18:12:45,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:12:45,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:12:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:12:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:12:45,583 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 18:12:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:45,745 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-11-25 18:12:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:12:45,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-25 18:12:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:45,746 INFO L225 Difference]: With dead ends: 54 [2022-11-25 18:12:45,747 INFO L226 Difference]: Without dead ends: 42 [2022-11-25 18:12:45,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:12:45,748 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:45,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 144 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:12:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-25 18:12:45,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-25 18:12:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 37 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-11-25 18:12:45,753 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 13 [2022-11-25 18:12:45,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:45,753 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-11-25 18:12:45,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 18:12:45,753 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-11-25 18:12:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 18:12:45,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:45,754 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:45,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:45,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:45,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1601039336, now seen corresponding path program 2 times [2022-11-25 18:12:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:45,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335591132] [2022-11-25 18:12:45,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:12:45,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:45,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:46,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 18:12:46,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:12:46,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:12:46,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:12:46,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:12:46,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:46,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:46,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335591132] [2022-11-25 18:12:46,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335591132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:46,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:46,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:12:46,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223568641] [2022-11-25 18:12:46,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:46,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:12:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:12:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:12:46,116 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:46,168 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-11-25 18:12:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:12:46,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-25 18:12:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:46,170 INFO L225 Difference]: With dead ends: 48 [2022-11-25 18:12:46,170 INFO L226 Difference]: Without dead ends: 44 [2022-11-25 18:12:46,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:12:46,171 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:46,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:12:46,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-25 18:12:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-25 18:12:46,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 39 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:46,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-11-25 18:12:46,175 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16 [2022-11-25 18:12:46,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:46,175 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-11-25 18:12:46,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:46,176 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-11-25 18:12:46,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 18:12:46,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:46,176 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:46,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:46,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:46,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:46,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash 555073211, now seen corresponding path program 1 times [2022-11-25 18:12:46,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:46,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471678622] [2022-11-25 18:12:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:46,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:46,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:46,400 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:46,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 18:12:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:46,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:12:46,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:46,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 18:12:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:12:46,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:46,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:46,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471678622] [2022-11-25 18:12:46,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471678622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:46,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:46,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:12:46,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439660528] [2022-11-25 18:12:46,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:46,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:12:46,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:12:46,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:46,562 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:46,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:46,613 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-11-25 18:12:46,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:12:46,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-25 18:12:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:46,615 INFO L225 Difference]: With dead ends: 42 [2022-11-25 18:12:46,615 INFO L226 Difference]: Without dead ends: 42 [2022-11-25 18:12:46,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:46,616 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:46,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 30 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:12:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-25 18:12:46,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-25 18:12:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 37 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-11-25 18:12:46,627 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 17 [2022-11-25 18:12:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:46,627 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-11-25 18:12:46,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-11-25 18:12:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 18:12:46,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:46,629 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:46,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:46,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:46,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:46,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:46,830 INFO L85 PathProgramCache]: Analyzing trace with hash 555073212, now seen corresponding path program 1 times [2022-11-25 18:12:46,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:46,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145857454] [2022-11-25 18:12:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:46,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:46,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:46,833 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:46,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 18:12:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:47,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:12:47,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:47,098 INFO L321 Elim1Store]: treesize reduction 60, result has 36.8 percent of original size [2022-11-25 18:12:47,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 54 [2022-11-25 18:12:47,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-11-25 18:12:47,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:12:47,328 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 18:12:47,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:12:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:12:47,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:47,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:47,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145857454] [2022-11-25 18:12:47,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145857454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:47,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:47,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:12:47,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039251785] [2022-11-25 18:12:47,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:47,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:12:47,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:47,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:12:47,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:12:47,343 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:47,475 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-11-25 18:12:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:12:47,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-25 18:12:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:47,476 INFO L225 Difference]: With dead ends: 41 [2022-11-25 18:12:47,477 INFO L226 Difference]: Without dead ends: 41 [2022-11-25 18:12:47,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:12:47,477 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:47,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:12:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-25 18:12:47,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-25 18:12:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-11-25 18:12:47,481 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 17 [2022-11-25 18:12:47,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:47,482 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-11-25 18:12:47,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-11-25 18:12:47,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 18:12:47,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:47,482 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:47,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:47,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:47,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash 555073213, now seen corresponding path program 1 times [2022-11-25 18:12:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:47,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386092658] [2022-11-25 18:12:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:47,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:47,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:47,686 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:47,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-25 18:12:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:47,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:12:47,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:47,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 18:12:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:12:47,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:47,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:47,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386092658] [2022-11-25 18:12:47,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386092658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:47,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:47,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:12:47,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877226142] [2022-11-25 18:12:47,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:47,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:12:47,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:47,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:12:47,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:47,849 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:47,886 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-11-25 18:12:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:12:47,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-25 18:12:47,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:47,888 INFO L225 Difference]: With dead ends: 39 [2022-11-25 18:12:47,888 INFO L226 Difference]: Without dead ends: 39 [2022-11-25 18:12:47,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:47,889 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:47,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:12:47,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-25 18:12:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-25 18:12:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-11-25 18:12:47,892 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 17 [2022-11-25 18:12:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:47,892 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-11-25 18:12:47,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-11-25 18:12:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 18:12:47,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:47,893 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:47,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:48,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:48,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:48,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash 555073214, now seen corresponding path program 1 times [2022-11-25 18:12:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:48,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784005871] [2022-11-25 18:12:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:48,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:48,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:48,096 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:48,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-25 18:12:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:48,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:12:48,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:48,568 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 18:12:48,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:12:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:12:48,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:48,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:48,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784005871] [2022-11-25 18:12:48,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784005871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:48,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:48,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:12:48,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111884989] [2022-11-25 18:12:48,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:48,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:12:48,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:12:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:12:48,648 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:48,807 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-11-25 18:12:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:12:48,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-25 18:12:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:48,809 INFO L225 Difference]: With dead ends: 38 [2022-11-25 18:12:48,809 INFO L226 Difference]: Without dead ends: 38 [2022-11-25 18:12:48,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:12:48,810 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:48,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 22 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:12:48,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-25 18:12:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-25 18:12:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-11-25 18:12:48,814 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 17 [2022-11-25 18:12:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:48,814 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-11-25 18:12:48,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:12:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-11-25 18:12:48,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-25 18:12:48,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:48,815 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:48,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:49,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:49,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1978376583, now seen corresponding path program 1 times [2022-11-25 18:12:49,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:49,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979088637] [2022-11-25 18:12:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:49,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:49,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:49,017 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:49,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 18:12:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:49,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 18:12:49,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:49,396 INFO L321 Elim1Store]: treesize reduction 60, result has 36.8 percent of original size [2022-11-25 18:12:49,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 54 [2022-11-25 18:12:49,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-11-25 18:12:49,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:12:49,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-25 18:12:49,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-25 18:12:50,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:12:50,200 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:12:50,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:12:50,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 18:12:50,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:12:50,911 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-25 18:12:50,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 37 [2022-11-25 18:12:50,918 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 12 treesize of output 11 [2022-11-25 18:12:50,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 18:12:51,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-25 18:12:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:12:51,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:12:51,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979088637] [2022-11-25 18:12:51,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979088637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:12:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [408794591] [2022-11-25 18:12:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:51,400 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:12:51,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:12:51,403 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:12:51,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-25 18:12:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:52,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-25 18:12:52,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:52,179 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:12:52,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:12:52,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:12:52,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-25 18:12:52,483 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 12 treesize of output 11 [2022-11-25 18:12:52,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:12:52,607 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:12:52,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:12:52,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 18:12:52,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:12:52,901 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-25 18:12:52,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 37 [2022-11-25 18:12:52,906 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 12 treesize of output 11 [2022-11-25 18:12:52,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 18:12:53,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-25 18:12:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:12:53,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:12:53,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [408794591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:12:53,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:12:53,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2022-11-25 18:12:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294496561] [2022-11-25 18:12:53,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:12:53,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 18:12:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 18:12:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=258, Unknown=34, NotChecked=0, Total=342 [2022-11-25 18:12:53,298 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:57,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:12:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:57,957 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2022-11-25 18:12:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 18:12:57,958 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-25 18:12:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:57,959 INFO L225 Difference]: With dead ends: 73 [2022-11-25 18:12:57,959 INFO L226 Difference]: Without dead ends: 73 [2022-11-25 18:12:57,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 17 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=131, Invalid=725, Unknown=74, NotChecked=0, Total=930 [2022-11-25 18:12:57,960 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 14 mSolverCounterUnsat, 42 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 42 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:57,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 156 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 240 Invalid, 42 Unknown, 0 Unchecked, 3.5s Time] [2022-11-25 18:12:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-25 18:12:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2022-11-25 18:12:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 53 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 18:12:57,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-11-25 18:12:57,966 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 31 [2022-11-25 18:12:57,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:57,966 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-11-25 18:12:57,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-11-25 18:12:57,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 18:12:57,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:57,968 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:57,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:58,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:58,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 18:12:58,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:58,382 INFO L85 PathProgramCache]: Analyzing trace with hash -459313580, now seen corresponding path program 2 times [2022-11-25 18:12:58,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:58,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973928025] [2022-11-25 18:12:58,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:12:58,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:58,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:58,384 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:58,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 18:12:58,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:12:58,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:12:58,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:12:58,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 18:12:58,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:12:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-25 18:12:58,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:12:58,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973928025] [2022-11-25 18:12:58,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973928025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:12:58,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:12:58,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 18:12:58,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370977917] [2022-11-25 18:12:58,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:12:58,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:12:58,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:12:58,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:12:58,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:12:58,780 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:12:58,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:58,862 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-11-25 18:12:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:12:58,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2022-11-25 18:12:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:58,863 INFO L225 Difference]: With dead ends: 43 [2022-11-25 18:12:58,863 INFO L226 Difference]: Without dead ends: 37 [2022-11-25 18:12:58,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:12:58,864 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:58,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 56 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:12:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-25 18:12:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-25 18:12:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:12:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2022-11-25 18:12:58,866 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32 [2022-11-25 18:12:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:58,867 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2022-11-25 18:12:58,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:12:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2022-11-25 18:12:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 18:12:58,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:58,868 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:58,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:59,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:59,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:12:59,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:59,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1200131997, now seen corresponding path program 1 times [2022-11-25 18:12:59,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:12:59,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396182417] [2022-11-25 18:12:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:59,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:12:59,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:12:59,070 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:12:59,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-25 18:12:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:59,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 18:12:59,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:59,515 INFO L321 Elim1Store]: treesize reduction 60, result has 36.8 percent of original size [2022-11-25 18:12:59,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 54 [2022-11-25 18:12:59,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-25 18:13:00,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:00,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-11-25 18:13:00,375 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 12 treesize of output 11 [2022-11-25 18:13:00,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:13:00,577 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:13:00,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:13:00,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 18:13:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:01,399 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-25 18:13:01,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 37 [2022-11-25 18:13:01,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 18:13:01,470 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 12 treesize of output 11 [2022-11-25 18:13:01,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-25 18:13:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 18:13:01,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:13:02,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:13:02,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396182417] [2022-11-25 18:13:02,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396182417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:13:02,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [320332422] [2022-11-25 18:13:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:02,070 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:13:02,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:13:02,071 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:13:02,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-25 18:13:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:02,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-25 18:13:02,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:02,773 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:13:02,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:13:02,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 18:13:03,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:03,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-25 18:13:03,952 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 12 treesize of output 11 [2022-11-25 18:13:03,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:13:04,078 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 18:13:04,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-25 18:13:04,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 18:13:04,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:04,489 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-25 18:13:04,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 37 [2022-11-25 18:13:04,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 18:13:04,539 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 12 treesize of output 11 [2022-11-25 18:13:04,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-25 18:13:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:13:04,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:13:04,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [320332422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:13:04,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:13:04,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 21 [2022-11-25 18:13:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750418454] [2022-11-25 18:13:04,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:13:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 18:13:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:13:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 18:13:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=469, Unknown=52, NotChecked=0, Total=600 [2022-11-25 18:13:04,940 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 23 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:13:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:13:08,182 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-11-25 18:13:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:13:08,183 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-25 18:13:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:13:08,184 INFO L225 Difference]: With dead ends: 36 [2022-11-25 18:13:08,184 INFO L226 Difference]: Without dead ends: 36 [2022-11-25 18:13:08,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=167, Invalid=1002, Unknown=91, NotChecked=0, Total=1260 [2022-11-25 18:13:08,185 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 15 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:13:08,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 81 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 260 Invalid, 28 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 18:13:08,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-25 18:13:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-25 18:13:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:13:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-11-25 18:13:08,189 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2022-11-25 18:13:08,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:13:08,190 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-11-25 18:13:08,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:13:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-11-25 18:13:08,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-25 18:13:08,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:13:08,191 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:13:08,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-25 18:13:08,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-25 18:13:08,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 18:13:08,616 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:13:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1450613687, now seen corresponding path program 1 times [2022-11-25 18:13:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:13:08,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624718431] [2022-11-25 18:13:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:08,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:13:08,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:13:08,618 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:13:08,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-25 18:13:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:09,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-25 18:13:09,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:09,113 INFO L321 Elim1Store]: treesize reduction 96, result has 22.0 percent of original size [2022-11-25 18:13:09,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 57 [2022-11-25 18:13:09,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-25 18:13:10,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:10,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-25 18:13:10,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-25 18:13:10,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-11-25 18:13:10,658 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-25 18:13:10,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-25 18:13:10,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2022-11-25 18:13:16,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:16,096 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-25 18:13:16,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 59 [2022-11-25 18:13:16,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2022-11-25 18:13:16,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-25 18:13:16,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2022-11-25 18:13:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:13:16,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:13:16,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:13:16,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624718431] [2022-11-25 18:13:16,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624718431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:13:16,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1723732706] [2022-11-25 18:13:16,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:16,860 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:13:16,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:13:16,861 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:13:16,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-25 18:13:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:17,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-25 18:13:17,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:17,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:17,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:17,756 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-25 18:13:17,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 50 [2022-11-25 18:13:17,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-25 18:13:21,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:21,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-25 18:13:22,004 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 12 treesize of output 11 [2022-11-25 18:13:22,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:22,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:22,355 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-11-25 18:13:22,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 48 [2022-11-25 18:13:26,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:26,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:26,663 INFO L321 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2022-11-25 18:13:26,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 55 [2022-11-25 18:13:26,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2022-11-25 18:13:38,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:39,027 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-25 18:13:39,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-11-25 18:13:39,036 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 12 treesize of output 11 [2022-11-25 18:13:39,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-11-25 18:13:39,509 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:13:39,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 20 [2022-11-25 18:13:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:13:40,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:13:40,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1723732706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:13:40,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:13:40,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 31 [2022-11-25 18:13:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167280859] [2022-11-25 18:13:40,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:13:40,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 18:13:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:13:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 18:13:40,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1265, Unknown=63, NotChecked=0, Total=1482 [2022-11-25 18:13:40,883 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 33 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 30 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:13:44,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:13:46,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:13:49,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:13:51,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:13:53,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:13:58,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:13:58,417 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-11-25 18:13:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:13:58,418 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 30 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 33 [2022-11-25 18:13:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:13:58,419 INFO L225 Difference]: With dead ends: 35 [2022-11-25 18:13:58,419 INFO L226 Difference]: Without dead ends: 35 [2022-11-25 18:13:58,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 14 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=281, Invalid=2052, Unknown=117, NotChecked=0, Total=2450 [2022-11-25 18:13:58,421 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 16 mSolverCounterUnsat, 68 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 68 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:13:58,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 85 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 294 Invalid, 68 Unknown, 0 Unchecked, 13.9s Time] [2022-11-25 18:13:58,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-25 18:13:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-25 18:13:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 18:13:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-11-25 18:13:58,425 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 33 [2022-11-25 18:13:58,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:13:58,425 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-11-25 18:13:58,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 30 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:13:58,426 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-11-25 18:13:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 18:13:58,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:13:58,426 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:13:58,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-11-25 18:13:58,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-25 18:13:58,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:13:58,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-25 18:13:58,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:58,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2019351264, now seen corresponding path program 1 times [2022-11-25 18:13:58,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:13:58,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589393894] [2022-11-25 18:13:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:58,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:13:58,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:13:58,833 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:13:58,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-25 18:13:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:59,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-25 18:13:59,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:59,383 INFO L321 Elim1Store]: treesize reduction 96, result has 22.0 percent of original size [2022-11-25 18:13:59,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 57 [2022-11-25 18:13:59,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-25 18:14:00,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:00,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:00,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-11-25 18:14:00,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-25 18:14:00,759 INFO L321 Elim1Store]: treesize reduction 180, result has 22.7 percent of original size [2022-11-25 18:14:00,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 222 treesize of output 248 [2022-11-25 18:14:00,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:00,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2022-11-25 18:14:01,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:01,748 INFO L321 Elim1Store]: treesize reduction 82, result has 15.5 percent of original size [2022-11-25 18:14:01,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 95 treesize of output 109 [2022-11-25 18:14:01,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 33 [2022-11-25 18:14:01,820 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 12 treesize of output 1 [2022-11-25 18:14:01,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 45 [2022-11-25 18:14:02,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:02,249 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-25 18:14:02,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 47 [2022-11-25 18:14:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 18:14:07,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:14:07,859 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_960 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_old_#valid#1| (store (store |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#p~1#1.base| v_ArrVal_960) |c_~#a~0.base|) |c_~#a~0.offset|) (_ bv0 1)) |c_ULTIMATE.start_main_~#p~1#1.base| (_ bv0 1)))) is different from false [2022-11-25 18:14:07,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:07,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589393894] [2022-11-25 18:14:07,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589393894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:14:07,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1855635056] [2022-11-25 18:14:07,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:07,862 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 18:14:07,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 18:14:07,863 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 18:14:07,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-25 18:14:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:08,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-25 18:14:08,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:10,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:10,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:10,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:10,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:10,216 INFO L321 Elim1Store]: treesize reduction 92, result has 25.2 percent of original size [2022-11-25 18:14:10,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 75 [2022-11-25 18:14:10,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-11-25 18:14:12,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:12,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:12,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2022-11-25 18:14:12,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-25 18:14:16,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:16,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:16,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:16,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:16,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:16,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:16,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:16,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:16,859 INFO L321 Elim1Store]: treesize reduction 134, result has 25.1 percent of original size [2022-11-25 18:14:16,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 126 treesize of output 158 [2022-11-25 18:14:16,892 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:14:16,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 19 [2022-11-25 18:14:18,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:18,308 INFO L321 Elim1Store]: treesize reduction 82, result has 15.5 percent of original size [2022-11-25 18:14:18,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 110 treesize of output 120 [2022-11-25 18:14:18,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 33 [2022-11-25 18:14:18,688 INFO L321 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-25 18:14:18,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 35 [2022-11-25 18:14:18,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2022-11-25 18:14:20,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:20,102 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-25 18:14:20,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 54 [2022-11-25 18:14:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 15 refuted. 5 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 18:14:29,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:14:30,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1855635056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:14:30,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:14:30,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 30 [2022-11-25 18:14:30,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597156474] [2022-11-25 18:14:30,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:14:30,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 18:14:30,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 18:14:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1207, Unknown=55, NotChecked=72, Total=1482 [2022-11-25 18:14:30,426 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 32 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:14:37,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:14:43,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:14:56,869 WARN L233 SmtUtils]: Spent 10.28s on a formula simplification. DAG size of input: 81 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:15:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:15:00,930 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2022-11-25 18:15:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 18:15:00,931 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-25 18:15:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:15:00,931 INFO L225 Difference]: With dead ends: 34 [2022-11-25 18:15:00,931 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 18:15:00,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 29 SyntacticMatches, 14 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=254, Invalid=1917, Unknown=89, NotChecked=92, Total=2352 [2022-11-25 18:15:00,933 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 10 mSolverCounterUnsat, 54 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 54 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:15:00,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 79 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 271 Invalid, 54 Unknown, 0 Unchecked, 7.4s Time] [2022-11-25 18:15:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 18:15:00,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 18:15:00,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:15:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 18:15:00,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2022-11-25 18:15:00,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:15:00,934 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 18:15:00,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:15:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 18:15:00,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 18:15:00,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2022-11-25 18:15:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2022-11-25 18:15:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2022-11-25 18:15:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2022-11-25 18:15:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2022-11-25 18:15:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2022-11-25 18:15:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2022-11-25 18:15:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2022-11-25 18:15:00,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2022-11-25 18:15:00,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2022-11-25 18:15:00,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (3 of 14 remaining) [2022-11-25 18:15:00,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (2 of 14 remaining) [2022-11-25 18:15:00,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (1 of 14 remaining) [2022-11-25 18:15:00,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2022-11-25 18:15:00,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-25 18:15:01,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-25 18:15:01,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:15:01,342 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:01,344 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:15:01,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:15:01 BoogieIcfgContainer [2022-11-25 18:15:01,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:15:01,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:15:01,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:15:01,349 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:15:01,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:12:42" (3/4) ... [2022-11-25 18:15:01,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:15:01,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memcpy [2022-11-25 18:15:01,366 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-25 18:15:01,366 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-25 18:15:01,367 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 18:15:01,367 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:15:01,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:15:01,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:15:01,455 INFO L158 Benchmark]: Toolchain (without parser) took 140568.00ms. Allocated memory was 73.4MB in the beginning and 123.7MB in the end (delta: 50.3MB). Free memory was 48.4MB in the beginning and 97.9MB in the end (delta: -49.5MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. [2022-11-25 18:15:01,456 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 73.4MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:15:01,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 581.92ms. Allocated memory is still 73.4MB. Free memory was 48.4MB in the beginning and 46.8MB in the end (delta: 1.6MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2022-11-25 18:15:01,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.42ms. Allocated memory is still 73.4MB. Free memory was 46.8MB in the beginning and 44.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:15:01,458 INFO L158 Benchmark]: Boogie Preprocessor took 47.79ms. Allocated memory is still 73.4MB. Free memory was 44.9MB in the beginning and 43.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:15:01,458 INFO L158 Benchmark]: RCFGBuilder took 667.17ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 43.0MB in the beginning and 78.7MB in the end (delta: -35.7MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2022-11-25 18:15:01,458 INFO L158 Benchmark]: TraceAbstraction took 139092.89ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 78.1MB in the beginning and 34.8MB in the end (delta: 43.4MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2022-11-25 18:15:01,459 INFO L158 Benchmark]: Witness Printer took 105.65ms. Allocated memory is still 123.7MB. Free memory was 34.8MB in the beginning and 97.9MB in the end (delta: -63.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:15:01,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 73.4MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 581.92ms. Allocated memory is still 73.4MB. Free memory was 48.4MB in the beginning and 46.8MB in the end (delta: 1.6MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.42ms. Allocated memory is still 73.4MB. Free memory was 46.8MB in the beginning and 44.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.79ms. Allocated memory is still 73.4MB. Free memory was 44.9MB in the beginning and 43.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 667.17ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 43.0MB in the beginning and 78.7MB in the end (delta: -35.7MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 139092.89ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 78.1MB in the beginning and 34.8MB in the end (delta: 43.4MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. * Witness Printer took 105.65ms. Allocated memory is still 123.7MB. Free memory was 34.8MB in the beginning and 97.9MB in the end (delta: -63.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 651]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 651]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 651]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 646]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 139.0s, OverallIterations: 16, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 57.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 192 mSolverCounterUnknown, 267 SdHoareTripleChecker+Valid, 27.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 260 mSDsluCounter, 1079 SdHoareTripleChecker+Invalid, 26.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 749 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1315 IncrementalHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 330 mSDtfsCounter, 1315 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 271 SyntacticMatches, 62 SemanticMatches, 198 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 85.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=12, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 71.5s InterpolantComputationTime, 413 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 436 ConstructedInterpolants, 192 QuantifiedInterpolants, 10539 SizeOfPredicates, 89 NumberOfNonLiveVariables, 3045 ConjunctsInSsa, 448 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 284/614 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:15:01,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f575149-907c-43c7-9ca1-9c6d20f35868/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE