./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro --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 e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- 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-8393723 [2022-11-18 19:37:01,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:37:01,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:37:01,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:37:01,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:37:01,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:37:01,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:37:01,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:37:01,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:37:01,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:37:01,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:37:01,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:37:01,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:37:01,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:37:01,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:37:01,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:37:01,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:37:01,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:37:01,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:37:01,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:37:01,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:37:01,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:37:01,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:37:01,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:37:01,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:37:01,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:37:01,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:37:01,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:37:01,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:37:01,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:37:01,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:37:01,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:37:01,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:37:01,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:37:01,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:37:01,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:37:01,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:37:01,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:37:01,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:37:01,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:37:01,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:37:01,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:37:01,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:37:01,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:37:01,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:37:01,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:37:01,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:37:01,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:37:01,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:37:01,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:37:01,755 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:37:01,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:37:01,756 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:37:01,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:37:01,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:37:01,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:37:01,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:37:01,757 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:37:01,758 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:37:01,758 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:37:01,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:37:01,758 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:37:01,758 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:37:01,758 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:37:01,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:37:01,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:37:01,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:37:01,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:37:01,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:37:01,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:37:01,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:37:01,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:37:01,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2022-11-18 19:37:02,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:37:02,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:37:02,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:37:02,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:37:02,125 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:37:02,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2022-11-18 19:37:02,194 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data/f1abdfb27/751203024c2d40059b407f8301f3c1f7/FLAGa25b0c69e [2022-11-18 19:37:02,850 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:37:02,854 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2022-11-18 19:37:02,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data/f1abdfb27/751203024c2d40059b407f8301f3c1f7/FLAGa25b0c69e [2022-11-18 19:37:03,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data/f1abdfb27/751203024c2d40059b407f8301f3c1f7 [2022-11-18 19:37:03,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:37:03,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:37:03,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:37:03,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:37:03,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:37:03,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:37:03" (1/1) ... [2022-11-18 19:37:03,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c985cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:03, skipping insertion in model container [2022-11-18 19:37:03,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:37:03" (1/1) ... [2022-11-18 19:37:03,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:37:03,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:37:03,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:37:03,688 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) [2022-11-18 19:37:03,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@296d5304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:03, skipping insertion in model container [2022-11-18 19:37:03,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:37:03,690 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 19:37:03,693 INFO L158 Benchmark]: Toolchain (without parser) took 593.40ms. Allocated memory is still 113.2MB. Free memory was 72.9MB in the beginning and 84.6MB in the end (delta: -11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:37:03,693 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:37:03,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 586.07ms. Allocated memory is still 113.2MB. Free memory was 72.7MB in the beginning and 84.6MB in the end (delta: -11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:37:03,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 586.07ms. Allocated memory is still 113.2MB. Free memory was 72.7MB in the beginning and 84.6MB in the end (delta: -11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro --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 e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- 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-8393723 [2022-11-18 19:37:05,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:37:05,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:37:05,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:37:05,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:37:05,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:37:05,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:37:05,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:37:05,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:37:05,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:37:05,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:37:05,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:37:05,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:37:05,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:37:05,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:37:05,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:37:05,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:37:05,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:37:05,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:37:05,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:37:05,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:37:05,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:37:05,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:37:05,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:37:05,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:37:05,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:37:05,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:37:05,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:37:05,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:37:05,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:37:05,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:37:05,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:37:05,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:37:05,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:37:05,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:37:05,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:37:05,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:37:05,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:37:05,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:37:05,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:37:05,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:37:05,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 19:37:06,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:37:06,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:37:06,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:37:06,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:37:06,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:37:06,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:37:06,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:37:06,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:37:06,008 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:37:06,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:37:06,009 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:37:06,009 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:37:06,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:37:06,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:37:06,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:37:06,010 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:37:06,011 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:37:06,011 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:37:06,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:37:06,011 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:37:06,011 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:37:06,011 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:37:06,012 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:37:06,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:37:06,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:37:06,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:37:06,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:37:06,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:37:06,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:37:06,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:37:06,013 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:37:06,014 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:37:06,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:37:06,014 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2022-11-18 19:37:06,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:37:06,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:37:06,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:37:06,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:37:06,472 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:37:06,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2022-11-18 19:37:06,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data/10b4f549f/f0a5e384f637481b917206c34cecfd5f/FLAGc17197331 [2022-11-18 19:37:07,239 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:37:07,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2022-11-18 19:37:07,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data/10b4f549f/f0a5e384f637481b917206c34cecfd5f/FLAGc17197331 [2022-11-18 19:37:07,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/data/10b4f549f/f0a5e384f637481b917206c34cecfd5f [2022-11-18 19:37:07,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:37:07,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:37:07,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:37:07,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:37:07,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:37:07,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:37:07" (1/1) ... [2022-11-18 19:37:07,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5a5bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:07, skipping insertion in model container [2022-11-18 19:37:07,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:37:07" (1/1) ... [2022-11-18 19:37:07,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:37:07,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:37:07,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:37:08,027 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 19:37:08,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:37:08,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:37:08,128 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:37:08,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:37:08,231 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:37:08,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08 WrapperNode [2022-11-18 19:37:08,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:37:08,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:37:08,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:37:08,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:37:08,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,308 INFO L138 Inliner]: procedures = 167, calls = 80, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 57 [2022-11-18 19:37:08,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:37:08,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:37:08,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:37:08,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:37:08,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:37:08,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:37:08,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:37:08,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:37:08,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (1/1) ... [2022-11-18 19:37:08,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:37:08,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:37:08,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:37:08,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:37:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-18 19:37:08,438 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-18 19:37:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-11-18 19:37:08,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-11-18 19:37:08,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 19:37:08,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 19:37:08,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-11-18 19:37:08,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-11-18 19:37:08,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:37:08,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:37:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:37:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:37:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:37:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:37:08,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-11-18 19:37:08,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-11-18 19:37:08,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:37:08,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:37:08,613 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:37:08,628 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:37:09,210 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:37:09,218 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:37:09,218 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:37:09,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:37:09 BoogieIcfgContainer [2022-11-18 19:37:09,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:37:09,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:37:09,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:37:09,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:37:09,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:37:07" (1/3) ... [2022-11-18 19:37:09,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35473bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:37:09, skipping insertion in model container [2022-11-18 19:37:09,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:37:08" (2/3) ... [2022-11-18 19:37:09,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35473bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:37:09, skipping insertion in model container [2022-11-18 19:37:09,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:37:09" (3/3) ... [2022-11-18 19:37:09,230 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test13.i [2022-11-18 19:37:09,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:37:09,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-18 19:37:09,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:37:09,341 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@490e4046, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:37:09,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-18 19:37:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 45 states have (on average 1.8) internal successors, (81), 78 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 19:37:09,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:37:09,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:09,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:09,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:09,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2002543009, now seen corresponding path program 1 times [2022-11-18 19:37:09,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:09,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446195376] [2022-11-18 19:37:09,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:09,383 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 [2022-11-18 19:37:09,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:09,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:09,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:09,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:37:09,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:09,853 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:37:09,854 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 [2022-11-18 19:37:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:09,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:09,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:09,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446195376] [2022-11-18 19:37:09,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446195376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:09,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:09,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:37:09,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986872392] [2022-11-18 19:37:09,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:09,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:37:09,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:09,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:37:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2022-11-18 19:37:09,990 INFO L87 Difference]: Start difference. First operand has 88 states, 45 states have (on average 1.8) internal successors, (81), 78 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:10,621 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2022-11-18 19:37:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:37:10,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-18 19:37:10,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:10,633 INFO L225 Difference]: With dead ends: 129 [2022-11-18 19:37:10,633 INFO L226 Difference]: Without dead ends: 125 [2022-11-18 19:37:10,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=70, Unknown=1, NotChecked=0, Total=110 [2022-11-18 19:37:10,650 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 170 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:10,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 134 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 245 Invalid, 0 Unknown, 70 Unchecked, 0.5s Time] [2022-11-18 19:37:10,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-18 19:37:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 84. [2022-11-18 19:37:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 74 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 19:37:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2022-11-18 19:37:10,708 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 12 [2022-11-18 19:37:10,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:10,708 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2022-11-18 19:37:10,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:10,709 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2022-11-18 19:37:10,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:37:10,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:10,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:10,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:10,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:10,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:10,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:10,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2002543010, now seen corresponding path program 1 times [2022-11-18 19:37:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:10,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066821052] [2022-11-18 19:37:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:10,926 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 [2022-11-18 19:37:10,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:10,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:10,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:11,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:37:11,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:13,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:13,308 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 12 treesize of output 14 [2022-11-18 19:37:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:13,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:13,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:13,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066821052] [2022-11-18 19:37:13,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066821052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:13,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:13,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:37:13,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242944118] [2022-11-18 19:37:13,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:13,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:37:13,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:37:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=40, Unknown=2, NotChecked=0, Total=56 [2022-11-18 19:37:13,457 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:20,478 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2022-11-18 19:37:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:37:20,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-18 19:37:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:20,480 INFO L225 Difference]: With dead ends: 130 [2022-11-18 19:37:20,481 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 19:37:20,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=64, Invalid=141, Unknown=5, NotChecked=0, Total=210 [2022-11-18 19:37:20,482 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 191 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:20,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 121 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 258 Invalid, 0 Unknown, 87 Unchecked, 0.7s Time] [2022-11-18 19:37:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 19:37:20,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 82. [2022-11-18 19:37:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 72 states have internal predecessors, (74), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 19:37:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2022-11-18 19:37:20,494 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 12 [2022-11-18 19:37:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:20,495 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2022-11-18 19:37:20,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2022-11-18 19:37:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:37:20,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:20,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:20,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:20,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:20,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 663113707, now seen corresponding path program 1 times [2022-11-18 19:37:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:20,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146031645] [2022-11-18 19:37:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:20,714 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 [2022-11-18 19:37:20,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:20,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:20,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:20,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:37:20,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:20,902 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 15 treesize of output 7 [2022-11-18 19:37:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:20,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:20,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:20,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146031645] [2022-11-18 19:37:20,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146031645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:20,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:20,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:37:20,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624870818] [2022-11-18 19:37:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:20,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:37:20,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:37:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:20,973 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:21,688 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2022-11-18 19:37:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:37:21,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-18 19:37:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:21,690 INFO L225 Difference]: With dead ends: 115 [2022-11-18 19:37:21,691 INFO L226 Difference]: Without dead ends: 115 [2022-11-18 19:37:21,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:37:21,692 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 66 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:21,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 350 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:37:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-18 19:37:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2022-11-18 19:37:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.6590909090909092) internal successors, (73), 71 states have internal predecessors, (73), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 19:37:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2022-11-18 19:37:21,702 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 15 [2022-11-18 19:37:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:21,703 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2022-11-18 19:37:21,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2022-11-18 19:37:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:37:21,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:21,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:21,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:21,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:21,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash 663113708, now seen corresponding path program 1 times [2022-11-18 19:37:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032709200] [2022-11-18 19:37:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:21,917 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 [2022-11-18 19:37:21,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:21,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:21,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:22,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:37:22,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:24,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:24,396 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 12 treesize of output 14 [2022-11-18 19:37:24,643 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 15 treesize of output 7 [2022-11-18 19:37:24,655 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 15 treesize of output 7 [2022-11-18 19:37:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:24,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:24,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:24,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032709200] [2022-11-18 19:37:24,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032709200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:24,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:24,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:37:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265097194] [2022-11-18 19:37:24,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:24,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:37:24,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:37:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=88, Unknown=2, NotChecked=0, Total=110 [2022-11-18 19:37:24,803 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:30,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:30,840 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2022-11-18 19:37:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:37:30,841 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-18 19:37:30,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:30,842 INFO L225 Difference]: With dead ends: 118 [2022-11-18 19:37:30,842 INFO L226 Difference]: Without dead ends: 118 [2022-11-18 19:37:30,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=95, Invalid=321, Unknown=4, NotChecked=0, Total=420 [2022-11-18 19:37:30,846 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 96 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:30,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 333 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 424 Invalid, 0 Unknown, 94 Unchecked, 1.1s Time] [2022-11-18 19:37:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-18 19:37:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 80. [2022-11-18 19:37:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 70 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 19:37:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2022-11-18 19:37:30,854 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 15 [2022-11-18 19:37:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:30,854 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2022-11-18 19:37:30,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2022-11-18 19:37:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:37:30,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:30,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:30,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:31,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:31,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:31,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:31,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1949585109, now seen corresponding path program 1 times [2022-11-18 19:37:31,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:31,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735647363] [2022-11-18 19:37:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:31,064 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 [2022-11-18 19:37:31,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:31,065 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:31,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:31,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:37:31,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:31,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:31,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:31,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735647363] [2022-11-18 19:37:31,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735647363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:31,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:31,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:37:31,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281341672] [2022-11-18 19:37:31,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:31,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:31,182 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 5 states, 5 states have (on average 2.2) 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) [2022-11-18 19:37:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:31,218 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2022-11-18 19:37:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:31,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) 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 13 [2022-11-18 19:37:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:31,220 INFO L225 Difference]: With dead ends: 110 [2022-11-18 19:37:31,220 INFO L226 Difference]: Without dead ends: 110 [2022-11-18 19:37:31,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:31,221 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 24 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:31,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 397 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:37:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-18 19:37:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 84. [2022-11-18 19:37:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 73 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:37:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2022-11-18 19:37:31,230 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 13 [2022-11-18 19:37:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:31,231 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2022-11-18 19:37:31,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) 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) [2022-11-18 19:37:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2022-11-18 19:37:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:37:31,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:31,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:31,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:31,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:31,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:31,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash 142130646, now seen corresponding path program 1 times [2022-11-18 19:37:31,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:31,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221815841] [2022-11-18 19:37:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:31,445 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 [2022-11-18 19:37:31,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:31,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:31,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:31,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:37:31,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:31,799 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 15 treesize of output 7 [2022-11-18 19:37:31,808 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 15 treesize of output 7 [2022-11-18 19:37:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:31,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:31,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:31,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221815841] [2022-11-18 19:37:31,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221815841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:31,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:31,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:37:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898531980] [2022-11-18 19:37:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:31,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:37:31,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:37:31,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:31,888 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-18 19:37:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:32,609 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2022-11-18 19:37:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:37:32,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 13 [2022-11-18 19:37:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:32,611 INFO L225 Difference]: With dead ends: 109 [2022-11-18 19:37:32,611 INFO L226 Difference]: Without dead ends: 109 [2022-11-18 19:37:32,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:37:32,612 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 36 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:32,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 236 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:37:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-18 19:37:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2022-11-18 19:37:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 78 states have internal predecessors, (82), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:37:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2022-11-18 19:37:32,621 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 13 [2022-11-18 19:37:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:32,621 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2022-11-18 19:37:32,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-18 19:37:32,622 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2022-11-18 19:37:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:37:32,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:32,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:32,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:32,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:32,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:32,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash 142130645, now seen corresponding path program 1 times [2022-11-18 19:37:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:32,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694684846] [2022-11-18 19:37:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:32,832 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 [2022-11-18 19:37:32,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:32,833 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:32,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:32,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:37:32,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:33,059 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 15 treesize of output 7 [2022-11-18 19:37:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:33,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:33,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:33,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694684846] [2022-11-18 19:37:33,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694684846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:33,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:33,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:37:33,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307371356] [2022-11-18 19:37:33,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:33,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:37:33,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:37:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:33,116 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-18 19:37:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:33,789 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2022-11-18 19:37:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:37:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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 13 [2022-11-18 19:37:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:33,791 INFO L225 Difference]: With dead ends: 104 [2022-11-18 19:37:33,791 INFO L226 Difference]: Without dead ends: 104 [2022-11-18 19:37:33,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:37:33,792 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 39 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:33,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 182 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:37:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-18 19:37:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 90. [2022-11-18 19:37:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.528301886792453) internal successors, (81), 78 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:37:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2022-11-18 19:37:33,798 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 13 [2022-11-18 19:37:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:33,803 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2022-11-18 19:37:33,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-18 19:37:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2022-11-18 19:37:33,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:37:33,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:33,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:33,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:34,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:34,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash -918311498, now seen corresponding path program 1 times [2022-11-18 19:37:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:34,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540852973] [2022-11-18 19:37:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:34,006 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 [2022-11-18 19:37:34,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:34,007 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:34,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:34,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:37:34,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:34,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:37:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:34,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:34,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:34,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540852973] [2022-11-18 19:37:34,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540852973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:34,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:34,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:37:34,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494945884] [2022-11-18 19:37:34,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:34,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:37:34,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:37:34,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:37:34,257 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:35,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:35,071 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2022-11-18 19:37:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:37:35,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-18 19:37:35,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:35,073 INFO L225 Difference]: With dead ends: 127 [2022-11-18 19:37:35,073 INFO L226 Difference]: Without dead ends: 127 [2022-11-18 19:37:35,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:37:35,074 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 47 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:35,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 419 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:37:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-18 19:37:35,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 103. [2022-11-18 19:37:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.492063492063492) internal successors, (94), 88 states have internal predecessors, (94), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 19:37:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2022-11-18 19:37:35,083 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 16 [2022-11-18 19:37:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:35,084 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2022-11-18 19:37:35,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2022-11-18 19:37:35,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:37:35,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:35,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:35,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-18 19:37:35,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:35,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash -918311497, now seen corresponding path program 1 times [2022-11-18 19:37:35,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:35,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952855771] [2022-11-18 19:37:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:35,298 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 [2022-11-18 19:37:35,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:35,299 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:35,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:35,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:35,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:35,402 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 [2022-11-18 19:37:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:35,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:35,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:35,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952855771] [2022-11-18 19:37:35,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952855771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:35,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:35,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:37:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463015772] [2022-11-18 19:37:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:35,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:37:35,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:37:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:37:35,678 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:36,653 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2022-11-18 19:37:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:37:36,654 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-18 19:37:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:36,655 INFO L225 Difference]: With dead ends: 130 [2022-11-18 19:37:36,655 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 19:37:36,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:37:36,656 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 47 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:36,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 503 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:37:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 19:37:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 103. [2022-11-18 19:37:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 88 states have internal predecessors, (92), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 19:37:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2022-11-18 19:37:36,663 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 16 [2022-11-18 19:37:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:36,664 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2022-11-18 19:37:36,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2022-11-18 19:37:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:37:36,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:36,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:36,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:36,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:36,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:36,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash -789228779, now seen corresponding path program 1 times [2022-11-18 19:37:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:36,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473763823] [2022-11-18 19:37:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:36,874 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 [2022-11-18 19:37:36,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:36,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:36,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:36,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:37:36,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:37,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:37,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:37,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473763823] [2022-11-18 19:37:37,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473763823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:37,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:37,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:37:37,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873799451] [2022-11-18 19:37:37,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:37,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:37,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:37,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:37,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:37,040 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:37,068 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2022-11-18 19:37:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:37,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-18 19:37:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:37,069 INFO L225 Difference]: With dead ends: 91 [2022-11-18 19:37:37,069 INFO L226 Difference]: Without dead ends: 91 [2022-11-18 19:37:37,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:37,070 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 10 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 308 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 [2022-11-18 19:37:37,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 308 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:37:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-18 19:37:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2022-11-18 19:37:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 74 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:37:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-11-18 19:37:37,076 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 16 [2022-11-18 19:37:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:37,076 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-11-18 19:37:37,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-11-18 19:37:37,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:37:37,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:37,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:37,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:37,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:37,288 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:37,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:37,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2029051719, now seen corresponding path program 1 times [2022-11-18 19:37:37,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:37,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467683529] [2022-11-18 19:37:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:37,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:37,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:37,291 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:37,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:37,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:37:37,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:37,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:37,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:37,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467683529] [2022-11-18 19:37:37,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467683529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:37,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:37,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:37:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765102878] [2022-11-18 19:37:37,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:37,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:37,466 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:37,721 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2022-11-18 19:37:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:37,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-18 19:37:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:37,722 INFO L225 Difference]: With dead ends: 85 [2022-11-18 19:37:37,722 INFO L226 Difference]: Without dead ends: 85 [2022-11-18 19:37:37,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:37,723 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 12 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:37,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 197 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:37:37,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-18 19:37:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-18 19:37:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 73 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:37:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2022-11-18 19:37:37,728 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 18 [2022-11-18 19:37:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:37,728 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2022-11-18 19:37:37,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2022-11-18 19:37:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:37:37,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:37,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:37,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:37,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:37,941 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:37,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2029051718, now seen corresponding path program 1 times [2022-11-18 19:37:37,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:37,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971033522] [2022-11-18 19:37:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:37,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:37,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:37,943 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:37,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:38,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:37:38,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:38,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:38,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971033522] [2022-11-18 19:37:38,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971033522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:38,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:38,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:37:38,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986062330] [2022-11-18 19:37:38,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:37:38,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:37:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:38,264 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:38,702 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2022-11-18 19:37:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:37:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-18 19:37:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:38,704 INFO L225 Difference]: With dead ends: 84 [2022-11-18 19:37:38,704 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 19:37:38,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:37:38,705 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 81 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:38,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 273 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:37:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 19:37:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-18 19:37:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 72 states have internal predecessors, (74), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:37:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-11-18 19:37:38,709 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 18 [2022-11-18 19:37:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:38,710 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-11-18 19:37:38,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-11-18 19:37:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:37:38,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:38,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:38,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 19:37:38,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:38,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash -781083149, now seen corresponding path program 1 times [2022-11-18 19:37:38,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:38,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199919466] [2022-11-18 19:37:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:38,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:38,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:38,924 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:38,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 19:37:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:38,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:37:38,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:39,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:39,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:39,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199919466] [2022-11-18 19:37:39,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199919466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:39,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:39,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:37:39,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137129593] [2022-11-18 19:37:39,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:39,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:37:39,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:37:39,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:39,207 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:39,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:39,820 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2022-11-18 19:37:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:37:39,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-18 19:37:39,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:39,822 INFO L225 Difference]: With dead ends: 121 [2022-11-18 19:37:39,822 INFO L226 Difference]: Without dead ends: 121 [2022-11-18 19:37:39,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:37:39,823 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 94 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:39,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 124 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:37:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-18 19:37:39,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 92. [2022-11-18 19:37:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 79 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-18 19:37:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2022-11-18 19:37:39,836 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 19 [2022-11-18 19:37:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:39,837 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2022-11-18 19:37:39,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2022-11-18 19:37:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:37:39,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:39,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:39,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:40,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:40,042 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:40,043 INFO L85 PathProgramCache]: Analyzing trace with hash -781083148, now seen corresponding path program 1 times [2022-11-18 19:37:40,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:40,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360992637] [2022-11-18 19:37:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:40,044 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 [2022-11-18 19:37:40,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:40,045 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:40,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:40,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:37:40,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:40,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:40,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:40,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360992637] [2022-11-18 19:37:40,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360992637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:40,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:40,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:37:40,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531220709] [2022-11-18 19:37:40,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:40,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:37:40,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:40,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:37:40,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:37:40,420 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:40,973 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2022-11-18 19:37:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:37:40,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-18 19:37:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:40,974 INFO L225 Difference]: With dead ends: 102 [2022-11-18 19:37:40,975 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 19:37:40,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:37:40,976 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:40,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 237 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:37:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 19:37:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2022-11-18 19:37:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.375) internal successors, (88), 85 states have internal predecessors, (88), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 19:37:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-11-18 19:37:40,981 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 19 [2022-11-18 19:37:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:40,981 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-11-18 19:37:40,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:37:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-11-18 19:37:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:37:40,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:40,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:40,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:41,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:41,190 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:41,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:41,191 INFO L85 PathProgramCache]: Analyzing trace with hash -151348929, now seen corresponding path program 1 times [2022-11-18 19:37:41,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:41,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180224541] [2022-11-18 19:37:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:41,191 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 [2022-11-18 19:37:41,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:41,192 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:41,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:37:41,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:41,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:41,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:41,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180224541] [2022-11-18 19:37:41,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180224541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:41,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:41,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344156351] [2022-11-18 19:37:41,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:41,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:37:41,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:41,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:37:41,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:41,367 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:37:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:41,689 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2022-11-18 19:37:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:37:41,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-18 19:37:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:41,691 INFO L225 Difference]: With dead ends: 101 [2022-11-18 19:37:41,691 INFO L226 Difference]: Without dead ends: 82 [2022-11-18 19:37:41,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:41,692 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 35 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:41,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 83 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:37:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-18 19:37:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-18 19:37:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.46) internal successors, (73), 70 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:37:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2022-11-18 19:37:41,696 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 24 [2022-11-18 19:37:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:41,696 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2022-11-18 19:37:41,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:37:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2022-11-18 19:37:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:37:41,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:41,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:41,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:41,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:41,898 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:41,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash 345895671, now seen corresponding path program 1 times [2022-11-18 19:37:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:41,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155669049] [2022-11-18 19:37:41,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:41,899 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 [2022-11-18 19:37:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:41,901 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:41,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 19:37:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:42,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:37:42,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:42,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:37:42,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:42,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:42,786 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 15 treesize of output 7 [2022-11-18 19:37:42,795 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 17 treesize of output 9 [2022-11-18 19:37:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:42,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:42,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:42,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155669049] [2022-11-18 19:37:42,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155669049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:42,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:42,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 19:37:42,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404022923] [2022-11-18 19:37:42,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:42,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:37:42,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:42,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:37:42,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:37:42,916 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:43,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:43,641 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2022-11-18 19:37:43,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:37:43,642 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2022-11-18 19:37:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:43,643 INFO L225 Difference]: With dead ends: 105 [2022-11-18 19:37:43,643 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 19:37:43,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:37:43,645 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 43 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:43,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 394 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 227 Invalid, 0 Unknown, 148 Unchecked, 0.6s Time] [2022-11-18 19:37:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 19:37:43,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2022-11-18 19:37:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 70 states have internal predecessors, (73), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 19:37:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-11-18 19:37:43,649 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 27 [2022-11-18 19:37:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:43,649 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-11-18 19:37:43,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-11-18 19:37:43,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:37:43,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:43,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:43,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:43,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:43,854 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:43,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:43,855 INFO L85 PathProgramCache]: Analyzing trace with hash 345895670, now seen corresponding path program 1 times [2022-11-18 19:37:43,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:43,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368877804] [2022-11-18 19:37:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:43,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:43,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:43,859 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:43,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:43,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:37:43,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:43,998 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 [2022-11-18 19:37:44,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:44,546 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 19 treesize of output 11 [2022-11-18 19:37:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:44,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:44,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:44,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368877804] [2022-11-18 19:37:44,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368877804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:44,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:44,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:37:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354487836] [2022-11-18 19:37:44,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:37:44,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:37:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:37:44,631 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:45,468 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2022-11-18 19:37:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:37:45,469 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2022-11-18 19:37:45,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:45,469 INFO L225 Difference]: With dead ends: 103 [2022-11-18 19:37:45,470 INFO L226 Difference]: Without dead ends: 103 [2022-11-18 19:37:45,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:37:45,471 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 50 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:45,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 378 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 224 Invalid, 0 Unknown, 211 Unchecked, 0.5s Time] [2022-11-18 19:37:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-18 19:37:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 84. [2022-11-18 19:37:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 71 states have internal predecessors, (75), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 19:37:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2022-11-18 19:37:45,475 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 27 [2022-11-18 19:37:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:45,476 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2022-11-18 19:37:45,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2022-11-18 19:37:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:37:45,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:45,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:45,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:45,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:45,690 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:45,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:45,690 INFO L85 PathProgramCache]: Analyzing trace with hash -566103308, now seen corresponding path program 1 times [2022-11-18 19:37:45,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:45,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822729182] [2022-11-18 19:37:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:45,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:45,692 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:45,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 19:37:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:45,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:37:45,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:45,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:37:46,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:46,312 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 19 treesize of output 11 [2022-11-18 19:37:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:46,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:46,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:46,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822729182] [2022-11-18 19:37:46,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822729182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:46,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:46,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:37:46,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631982061] [2022-11-18 19:37:46,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:46,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:37:46,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:37:46,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:37:46,488 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:46,952 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2022-11-18 19:37:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:37:46,952 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-18 19:37:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:46,953 INFO L225 Difference]: With dead ends: 99 [2022-11-18 19:37:46,953 INFO L226 Difference]: Without dead ends: 99 [2022-11-18 19:37:46,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:37:46,954 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 66 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:46,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 236 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 114 Unchecked, 0.3s Time] [2022-11-18 19:37:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-18 19:37:46,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2022-11-18 19:37:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.459016393442623) internal successors, (89), 79 states have internal predecessors, (89), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 19:37:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2022-11-18 19:37:46,959 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 32 [2022-11-18 19:37:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:46,959 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2022-11-18 19:37:46,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:46,960 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2022-11-18 19:37:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:37:46,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:46,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:46,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:47,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:47,166 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:47,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:47,167 INFO L85 PathProgramCache]: Analyzing trace with hash -566103307, now seen corresponding path program 1 times [2022-11-18 19:37:47,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:47,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386218620] [2022-11-18 19:37:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:47,167 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 [2022-11-18 19:37:47,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:47,168 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:47,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 19:37:47,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:47,343 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 [2022-11-18 19:37:47,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:47,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:48,062 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 15 treesize of output 7 [2022-11-18 19:37:48,067 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 17 treesize of output 9 [2022-11-18 19:37:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:48,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:48,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386218620] [2022-11-18 19:37:48,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386218620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:48,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:48,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 19:37:48,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127588468] [2022-11-18 19:37:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:48,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:37:48,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:37:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:37:48,338 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:49,030 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2022-11-18 19:37:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:37:49,031 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-18 19:37:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:49,032 INFO L225 Difference]: With dead ends: 97 [2022-11-18 19:37:49,032 INFO L226 Difference]: Without dead ends: 97 [2022-11-18 19:37:49,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:37:49,033 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 49 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:49,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 409 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 145 Unchecked, 0.5s Time] [2022-11-18 19:37:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-18 19:37:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2022-11-18 19:37:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 79 states have internal predecessors, (87), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 19:37:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2022-11-18 19:37:49,037 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 32 [2022-11-18 19:37:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:49,037 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2022-11-18 19:37:49,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2022-11-18 19:37:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 19:37:49,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:49,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:49,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:37:49,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:49,246 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:49,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:49,247 INFO L85 PathProgramCache]: Analyzing trace with hash -372722091, now seen corresponding path program 1 times [2022-11-18 19:37:49,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:49,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940326946] [2022-11-18 19:37:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:49,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:49,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:49,249 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:49,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 19:37:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:49,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:37:49,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:49,472 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:37:49,473 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 [2022-11-18 19:37:49,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:49,995 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 16 treesize of output 8 [2022-11-18 19:37:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:50,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:50,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:50,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940326946] [2022-11-18 19:37:50,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940326946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:50,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:50,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:37:50,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205273792] [2022-11-18 19:37:50,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:50,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:37:50,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:50,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:37:50,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:37:50,106 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:52,279 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2022-11-18 19:37:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:37:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2022-11-18 19:37:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:52,280 INFO L225 Difference]: With dead ends: 133 [2022-11-18 19:37:52,280 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 19:37:52,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:37:52,282 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 310 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:52,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 129 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:37:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 19:37:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 86. [2022-11-18 19:37:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 73 states have internal predecessors, (79), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:37:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2022-11-18 19:37:52,287 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 33 [2022-11-18 19:37:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:52,287 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2022-11-18 19:37:52,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2022-11-18 19:37:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 19:37:52,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:52,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:52,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:52,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:52,489 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:52,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:52,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1552970525, now seen corresponding path program 1 times [2022-11-18 19:37:52,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:52,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636738797] [2022-11-18 19:37:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:52,490 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 [2022-11-18 19:37:52,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:52,492 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:52,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 19:37:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:52,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 19:37:52,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:52,838 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:37:52,839 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 [2022-11-18 19:37:52,928 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 7 treesize of output 3 [2022-11-18 19:37:53,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:53,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:37:53,558 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:37:53,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-11-18 19:37:53,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:54,011 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 43 treesize of output 35 [2022-11-18 19:37:54,135 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 23 treesize of output 15 [2022-11-18 19:37:54,674 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:37:54,675 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-11-18 19:37:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:54,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:54,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:54,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636738797] [2022-11-18 19:37:54,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636738797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:54,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:54,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 19:37:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025993278] [2022-11-18 19:37:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:54,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:37:54,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:37:54,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:37:54,820 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 22 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:55,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:55,755 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2022-11-18 19:37:55,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:37:55,755 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-11-18 19:37:55,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:55,756 INFO L225 Difference]: With dead ends: 89 [2022-11-18 19:37:55,756 INFO L226 Difference]: Without dead ends: 89 [2022-11-18 19:37:55,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:37:55,757 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 28 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:55,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 401 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 219 Unchecked, 0.5s Time] [2022-11-18 19:37:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-18 19:37:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2022-11-18 19:37:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 73 states have internal predecessors, (78), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:37:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2022-11-18 19:37:55,761 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 35 [2022-11-18 19:37:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:55,762 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2022-11-18 19:37:55,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:37:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2022-11-18 19:37:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 19:37:55,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:55,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:55,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:55,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:55,975 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:37:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1552970526, now seen corresponding path program 1 times [2022-11-18 19:37:55,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:55,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946217213] [2022-11-18 19:37:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:55,976 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 [2022-11-18 19:37:55,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:55,977 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:37:55,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 19:37:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:56,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-18 19:37:56,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:56,371 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:37:56,372 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 [2022-11-18 19:37:56,508 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 7 treesize of output 3 [2022-11-18 19:37:56,525 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 7 treesize of output 3 [2022-11-18 19:37:57,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:57,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:37:57,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:37:57,336 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 20 [2022-11-18 19:37:57,467 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:37:57,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-11-18 19:37:57,550 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:37:57,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-11-18 19:37:58,231 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 58 treesize of output 46 [2022-11-18 19:37:58,239 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 54 treesize of output 42 [2022-11-18 19:37:59,062 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 19:37:59,063 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2022-11-18 19:37:59,072 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 19:37:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:59,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:59,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:59,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946217213] [2022-11-18 19:37:59,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946217213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:59,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:59,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 19:37:59,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418434267] [2022-11-18 19:37:59,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:59,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:37:59,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:59,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:37:59,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:37:59,254 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:38:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:04,200 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2022-11-18 19:38:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:38:04,201 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-11-18 19:38:04,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:04,202 INFO L225 Difference]: With dead ends: 88 [2022-11-18 19:38:04,202 INFO L226 Difference]: Without dead ends: 88 [2022-11-18 19:38:04,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 19:38:04,204 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 133 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:04,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 575 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 19:38:04,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-18 19:38:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2022-11-18 19:38:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.375) internal successors, (77), 73 states have internal predecessors, (77), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:38:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2022-11-18 19:38:04,207 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 35 [2022-11-18 19:38:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:04,208 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2022-11-18 19:38:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:38:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2022-11-18 19:38:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:38:04,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:04,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:04,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:04,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:04,421 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:04,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:04,422 INFO L85 PathProgramCache]: Analyzing trace with hash 897446074, now seen corresponding path program 1 times [2022-11-18 19:38:04,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:04,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80965423] [2022-11-18 19:38:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:04,423 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 [2022-11-18 19:38:04,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:04,424 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:04,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 19:38:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:04,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:38:04,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:04,681 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:38:04,682 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 [2022-11-18 19:38:05,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-18 19:38:05,203 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-18 19:38:05,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-11-18 19:38:05,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:38:05,664 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 25 treesize of output 17 [2022-11-18 19:38:06,124 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-18 19:38:06,124 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 14 [2022-11-18 19:38:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:06,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:06,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:06,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80965423] [2022-11-18 19:38:06,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80965423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:06,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:06,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 19:38:06,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637182578] [2022-11-18 19:38:06,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:06,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:38:06,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:38:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:38:06,261 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:38:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:07,108 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2022-11-18 19:38:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:38:07,109 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2022-11-18 19:38:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:07,110 INFO L225 Difference]: With dead ends: 87 [2022-11-18 19:38:07,110 INFO L226 Difference]: Without dead ends: 87 [2022-11-18 19:38:07,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:38:07,111 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 35 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:07,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 339 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 253 Unchecked, 0.4s Time] [2022-11-18 19:38:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-18 19:38:07,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2022-11-18 19:38:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 73 states have internal predecessors, (76), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:38:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2022-11-18 19:38:07,115 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 36 [2022-11-18 19:38:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:07,116 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2022-11-18 19:38:07,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:38:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2022-11-18 19:38:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:38:07,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:07,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:07,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:07,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:07,330 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash 897446075, now seen corresponding path program 1 times [2022-11-18 19:38:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:07,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195555144] [2022-11-18 19:38:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:07,331 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 [2022-11-18 19:38:07,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:07,332 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:07,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 19:38:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:07,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-18 19:38:07,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:07,743 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:38:07,743 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 [2022-11-18 19:38:07,754 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 12 treesize of output 14 [2022-11-18 19:38:08,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-18 19:38:08,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-18 19:38:09,016 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 19:38:09,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-11-18 19:38:09,074 INFO L321 Elim1Store]: treesize reduction 43, result has 23.2 percent of original size [2022-11-18 19:38:09,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 24 [2022-11-18 19:38:10,385 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 38 [2022-11-18 19:38:10,395 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:38:10,396 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-11-18 19:38:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:10,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:10,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:10,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195555144] [2022-11-18 19:38:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195555144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:10,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:10,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 19:38:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813148643] [2022-11-18 19:38:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:38:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:38:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:38:10,587 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:38:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:15,574 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2022-11-18 19:38:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:38:15,575 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2022-11-18 19:38:15,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:15,576 INFO L225 Difference]: With dead ends: 87 [2022-11-18 19:38:15,576 INFO L226 Difference]: Without dead ends: 87 [2022-11-18 19:38:15,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:38:15,577 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 160 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:15,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 241 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 892 Invalid, 0 Unknown, 61 Unchecked, 2.8s Time] [2022-11-18 19:38:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-18 19:38:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2022-11-18 19:38:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 73 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:38:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-11-18 19:38:15,581 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 36 [2022-11-18 19:38:15,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:15,581 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-11-18 19:38:15,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:38:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-11-18 19:38:15,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 19:38:15,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:15,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:15,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-18 19:38:15,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:15,786 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:15,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:15,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2088327703, now seen corresponding path program 1 times [2022-11-18 19:38:15,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:15,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855900520] [2022-11-18 19:38:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:15,787 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 [2022-11-18 19:38:15,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:15,789 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:15,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 19:38:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:15,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:38:15,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:16,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:38:16,638 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 23 treesize of output 11 [2022-11-18 19:38:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:16,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:16,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:16,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855900520] [2022-11-18 19:38:16,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855900520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:16,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:16,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:38:16,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259097001] [2022-11-18 19:38:16,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:16,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:38:16,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:38:16,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:38:16,970 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 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) [2022-11-18 19:38:17,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:17,458 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2022-11-18 19:38:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:38:17,458 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 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 41 [2022-11-18 19:38:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:17,459 INFO L225 Difference]: With dead ends: 102 [2022-11-18 19:38:17,459 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 19:38:17,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:38:17,460 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 69 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:17,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 483 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 148 Unchecked, 0.4s Time] [2022-11-18 19:38:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 19:38:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2022-11-18 19:38:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 73 states have internal predecessors, (74), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:38:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2022-11-18 19:38:17,465 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 41 [2022-11-18 19:38:17,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:17,465 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2022-11-18 19:38:17,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 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) [2022-11-18 19:38:17,465 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2022-11-18 19:38:17,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 19:38:17,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:17,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:17,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:17,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:17,674 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:17,675 INFO L85 PathProgramCache]: Analyzing trace with hash 769395034, now seen corresponding path program 1 times [2022-11-18 19:38:17,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:17,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443215190] [2022-11-18 19:38:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:17,676 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 [2022-11-18 19:38:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:17,676 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:17,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 19:38:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:17,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-18 19:38:17,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:18,085 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:38:18,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:38:18,205 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 7 treesize of output 3 [2022-11-18 19:38:18,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:38:18,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:38:18,852 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:38:18,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-11-18 19:38:18,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:38:19,275 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 43 treesize of output 35 [2022-11-18 19:38:19,409 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 23 treesize of output 15 [2022-11-18 19:38:20,332 INFO L321 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2022-11-18 19:38:20,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 24 [2022-11-18 19:38:20,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-18 19:38:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:20,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:20,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:20,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443215190] [2022-11-18 19:38:20,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443215190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:20,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:20,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 19:38:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243574245] [2022-11-18 19:38:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:20,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:38:20,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:38:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:38:20,548 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:38:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:23,139 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2022-11-18 19:38:23,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:38:23,140 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 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 44 [2022-11-18 19:38:23,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:23,140 INFO L225 Difference]: With dead ends: 105 [2022-11-18 19:38:23,141 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 19:38:23,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:38:23,142 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 60 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 254 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:23,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 454 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 681 Invalid, 0 Unknown, 254 Unchecked, 1.7s Time] [2022-11-18 19:38:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 19:38:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2022-11-18 19:38:23,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 75 states have internal predecessors, (77), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:38:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2022-11-18 19:38:23,146 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 44 [2022-11-18 19:38:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:23,147 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2022-11-18 19:38:23,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:38:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2022-11-18 19:38:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 19:38:23,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:23,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:23,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-18 19:38:23,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:23,367 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash 769395035, now seen corresponding path program 1 times [2022-11-18 19:38:23,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:23,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150274487] [2022-11-18 19:38:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:23,368 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 [2022-11-18 19:38:23,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:23,369 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:23,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-18 19:38:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:23,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-18 19:38:23,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:23,887 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:38:23,887 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 [2022-11-18 19:38:23,901 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 12 treesize of output 14 [2022-11-18 19:38:24,047 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 7 treesize of output 3 [2022-11-18 19:38:24,059 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 7 treesize of output 3 [2022-11-18 19:38:24,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:38:24,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:38:24,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:38:24,773 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 20 [2022-11-18 19:38:24,887 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:38:24,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-11-18 19:38:24,966 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:38:24,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-11-18 19:38:25,545 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 43 treesize of output 35 [2022-11-18 19:38:25,577 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 43 treesize of output 35 [2022-11-18 19:38:26,388 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 19:38:26,388 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 38 [2022-11-18 19:38:26,399 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 12 [2022-11-18 19:38:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:26,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:26,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:26,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150274487] [2022-11-18 19:38:26,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150274487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:26,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:26,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 19:38:26,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959467483] [2022-11-18 19:38:26,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:26,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:38:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:26,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:38:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:38:26,554 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:38:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:30,502 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2022-11-18 19:38:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:38:30,503 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 4 states have call successors, (4), 4 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 44 [2022-11-18 19:38:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:30,504 INFO L225 Difference]: With dead ends: 89 [2022-11-18 19:38:30,504 INFO L226 Difference]: Without dead ends: 89 [2022-11-18 19:38:30,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:38:30,505 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 175 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:30,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 421 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 737 Invalid, 0 Unknown, 62 Unchecked, 2.1s Time] [2022-11-18 19:38:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-18 19:38:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2022-11-18 19:38:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 75 states have internal predecessors, (76), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:38:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2022-11-18 19:38:30,508 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 44 [2022-11-18 19:38:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:30,509 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2022-11-18 19:38:30,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:38:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2022-11-18 19:38:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 19:38:30,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:30,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:30,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:30,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:30,718 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:30,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:30,719 INFO L85 PathProgramCache]: Analyzing trace with hash 305014949, now seen corresponding path program 1 times [2022-11-18 19:38:30,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:30,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950518724] [2022-11-18 19:38:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:30,720 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 [2022-11-18 19:38:30,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:30,720 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:30,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 19:38:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:30,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:38:30,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:30,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:30,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:30,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950518724] [2022-11-18 19:38:30,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950518724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:30,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:30,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:38:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596351844] [2022-11-18 19:38:30,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:30,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:38:30,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:30,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:38:30,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:38:30,945 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 19:38:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:31,277 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2022-11-18 19:38:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:38:31,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-11-18 19:38:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:31,278 INFO L225 Difference]: With dead ends: 85 [2022-11-18 19:38:31,278 INFO L226 Difference]: Without dead ends: 85 [2022-11-18 19:38:31,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:38:31,279 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:31,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 172 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:38:31,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-18 19:38:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-18 19:38:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 72 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:38:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2022-11-18 19:38:31,282 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 49 [2022-11-18 19:38:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:31,282 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2022-11-18 19:38:31,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 19:38:31,290 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2022-11-18 19:38:31,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 19:38:31,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:31,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:31,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-18 19:38:31,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:31,502 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:31,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:31,503 INFO L85 PathProgramCache]: Analyzing trace with hash 305014950, now seen corresponding path program 1 times [2022-11-18 19:38:31,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:31,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246099629] [2022-11-18 19:38:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:31,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:31,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:31,504 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:31,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-18 19:38:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:31,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:38:31,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:32,114 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 29 treesize of output 17 [2022-11-18 19:38:32,118 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 44 treesize of output 20 [2022-11-18 19:38:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:32,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:34,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:38:34,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2022-11-18 19:38:44,102 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:38:44,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:38:44,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 151 [2022-11-18 19:38:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:48,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:48,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246099629] [2022-11-18 19:38:48,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246099629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:48,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:48,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-11-18 19:38:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557733421] [2022-11-18 19:38:48,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:38:48,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:38:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:38:48,852 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 26 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 19:38:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:55,204 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2022-11-18 19:38:55,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:38:55,205 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2022-11-18 19:38:55,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:55,206 INFO L225 Difference]: With dead ends: 112 [2022-11-18 19:38:55,206 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 19:38:55,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:38:55,207 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 75 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:55,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 720 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 578 Invalid, 0 Unknown, 243 Unchecked, 3.5s Time] [2022-11-18 19:38:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 19:38:55,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 97. [2022-11-18 19:38:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 83 states have internal predecessors, (88), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 19:38:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2022-11-18 19:38:55,222 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 49 [2022-11-18 19:38:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:55,223 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2022-11-18 19:38:55,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 19:38:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2022-11-18 19:38:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 19:38:55,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:55,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:55,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-18 19:38:55,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:55,430 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash 862140099, now seen corresponding path program 1 times [2022-11-18 19:38:55,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:55,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241891741] [2022-11-18 19:38:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:55,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:55,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:55,433 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-18 19:38:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:55,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:38:55,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:55,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:55,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:55,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241891741] [2022-11-18 19:38:55,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241891741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:55,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:55,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:38:55,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932616383] [2022-11-18 19:38:55,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:55,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:38:55,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:55,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:38:55,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:38:55,719 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 19:38:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:56,286 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2022-11-18 19:38:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:38:56,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2022-11-18 19:38:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:56,288 INFO L225 Difference]: With dead ends: 95 [2022-11-18 19:38:56,288 INFO L226 Difference]: Without dead ends: 95 [2022-11-18 19:38:56,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:38:56,289 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 73 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:56,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 153 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:38:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-18 19:38:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-18 19:38:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 19:38:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2022-11-18 19:38:56,292 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 50 [2022-11-18 19:38:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:56,292 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2022-11-18 19:38:56,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 19:38:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2022-11-18 19:38:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 19:38:56,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:56,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:56,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:56,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:56,493 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash 862140100, now seen corresponding path program 1 times [2022-11-18 19:38:56,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:56,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075486647] [2022-11-18 19:38:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:56,495 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 [2022-11-18 19:38:56,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:56,496 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:56,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-18 19:38:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:56,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:38:56,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:57,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:57,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075486647] [2022-11-18 19:38:57,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075486647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:57,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:57,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:38:57,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844279944] [2022-11-18 19:38:57,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:38:57,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:57,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:38:57,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:38:57,198 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:38:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:57,796 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2022-11-18 19:38:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:38:57,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2022-11-18 19:38:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:57,797 INFO L225 Difference]: With dead ends: 94 [2022-11-18 19:38:57,797 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 19:38:57,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:38:57,798 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 73 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:57,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 172 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:38:57,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 19:38:57,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-18 19:38:57,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 68 states have (on average 1.25) internal successors, (85), 80 states have internal predecessors, (85), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 19:38:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2022-11-18 19:38:57,807 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 50 [2022-11-18 19:38:57,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:57,807 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2022-11-18 19:38:57,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:38:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2022-11-18 19:38:57,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 19:38:57,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:57,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:57,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-18 19:38:58,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:58,022 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:38:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash 956539334, now seen corresponding path program 1 times [2022-11-18 19:38:58,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:58,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103312375] [2022-11-18 19:38:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:58,023 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 [2022-11-18 19:38:58,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:58,024 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:38:58,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-18 19:38:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:38:58,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:58,373 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 7 treesize of output 3 [2022-11-18 19:38:58,386 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 7 treesize of output 3 [2022-11-18 19:38:58,742 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 23 treesize of output 15 [2022-11-18 19:38:58,746 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 19 treesize of output 11 [2022-11-18 19:38:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:59,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:59,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:59,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103312375] [2022-11-18 19:38:59,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103312375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:59,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:59,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:38:59,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150671542] [2022-11-18 19:38:59,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:59,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:38:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:59,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:38:59,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:38:59,078 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:39:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:00,722 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2022-11-18 19:39:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:39:00,723 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2022-11-18 19:39:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:00,723 INFO L225 Difference]: With dead ends: 93 [2022-11-18 19:39:00,723 INFO L226 Difference]: Without dead ends: 93 [2022-11-18 19:39:00,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:39:00,724 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 103 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:00,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 284 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:39:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-18 19:39:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-11-18 19:39:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 79 states have internal predecessors, (84), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 19:39:00,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2022-11-18 19:39:00,728 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 51 [2022-11-18 19:39:00,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:00,729 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2022-11-18 19:39:00,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:39:00,729 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2022-11-18 19:39:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 19:39:00,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:00,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:00,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:00,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:00,943 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-18 19:39:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1450404916, now seen corresponding path program 1 times [2022-11-18 19:39:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:39:00,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261770990] [2022-11-18 19:39:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:00,944 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 [2022-11-18 19:39:00,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:39:00,945 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:39:00,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-18 19:39:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:01,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 19:39:01,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:01,417 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:39:01,417 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 [2022-11-18 19:39:01,426 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 12 treesize of output 14 [2022-11-18 19:39:01,551 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 7 treesize of output 3 [2022-11-18 19:39:01,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:39:02,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:39:02,247 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:39:02,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-11-18 19:39:02,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:39:02,672 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 43 treesize of output 35 [2022-11-18 19:39:02,814 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 23 treesize of output 15 [2022-11-18 19:39:03,053 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-18 19:39:03,053 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 14 [2022-11-18 19:39:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:04,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:06,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:39:06,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261770990] [2022-11-18 19:39:06,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261770990] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:06,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1424276910] [2022-11-18 19:39:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:06,230 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:39:06,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:39:06,232 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:39:06,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_280bebc2-b426-4527-9a6e-0980c8f32c61/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-18 19:39:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:06,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-18 19:39:06,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:07,303 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:39:07,304 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 [2022-11-18 19:39:07,683 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 7 treesize of output 3 [2022-11-18 19:39:07,688 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 7 treesize of output 3 [2022-11-18 19:39:08,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:39:08,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:39:09,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:09,075 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 20 [2022-11-18 19:39:09,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:09,115 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 20 [2022-11-18 19:39:09,191 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:39:09,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-11-18 19:39:09,290 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 19:39:09,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-11-18 19:39:10,082 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 43 treesize of output 35 [2022-11-18 19:39:10,107 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 43 treesize of output 35 [2022-11-18 19:39:11,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:39:11,747 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2022-11-18 19:39:11,754 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 10 [2022-11-18 19:39:12,514 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:39:12,514 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 39 [2022-11-18 19:39:12,534 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 19:39:12,534 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2022-11-18 19:39:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:13,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:19,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:19,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:24,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:39:24,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 61693 treesize of output 52062 [2022-11-18 19:39:25,324 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:39:25,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 122536 treesize of output 120704