./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a 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_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc --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 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 --- 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-5e519f3 [2022-11-02 20:17:34,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:17:34,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:17:34,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:17:34,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:17:34,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:17:34,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:17:34,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:17:34,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:17:34,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:17:34,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:17:34,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:17:34,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:17:34,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:17:34,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:17:34,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:17:34,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:17:34,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:17:34,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:17:34,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:17:34,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:17:34,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:17:34,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:17:34,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:17:34,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:17:34,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:17:34,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:17:34,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:17:34,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:17:34,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:17:34,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:17:34,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:17:34,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:17:34,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:17:34,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:17:34,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:17:34,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:17:34,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:17:34,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:17:34,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:17:34,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:17:34,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 20:17:34,649 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:17:34,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:17:34,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:17:34,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:17:34,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:17:34,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:17:34,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:17:34,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:17:34,652 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:17:34,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:17:34,653 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:17:34,653 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:17:34,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:17:34,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:17:34,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:17:34,654 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:17:34,654 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:17:34,654 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:17:34,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:17:34,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:17:34,655 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:17:34,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:17:34,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:17:34,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:17:34,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:17:34,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:34,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:17:34,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:17:34,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:17:34,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:17:34,658 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_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 [2022-11-02 20:17:34,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:17:34,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:17:34,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:17:35,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:17:35,001 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:17:35,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2022-11-02 20:17:35,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data/2c3cabc5a/b3163026d96c40b4afd7488d8ca53bc3/FLAG5324d612e [2022-11-02 20:17:35,826 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:17:35,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2022-11-02 20:17:35,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data/2c3cabc5a/b3163026d96c40b4afd7488d8ca53bc3/FLAG5324d612e [2022-11-02 20:17:36,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data/2c3cabc5a/b3163026d96c40b4afd7488d8ca53bc3 [2022-11-02 20:17:36,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:17:36,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:17:36,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:36,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:17:36,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:17:36,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:36" (1/1) ... [2022-11-02 20:17:36,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780f2db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:36, skipping insertion in model container [2022-11-02 20:17:36,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:36" (1/1) ... [2022-11-02 20:17:36,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:17:36,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:17:36,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:36,488 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) [2022-11-02 20:17:36,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d6cae9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:36, skipping insertion in model container [2022-11-02 20:17:36,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:36,489 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 20:17:36,491 INFO L158 Benchmark]: Toolchain (without parser) took 420.32ms. Allocated memory is still 98.6MB. Free memory was 64.9MB in the beginning and 73.4MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:17:36,492 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:17:36,493 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.13ms. Allocated memory is still 98.6MB. Free memory was 64.7MB in the beginning and 73.4MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:17:36,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 98.6MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 43.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.13ms. Allocated memory is still 98.6MB. Free memory was 64.7MB in the beginning and 73.4MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 555]: 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_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc --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 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 --- 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-5e519f3 [2022-11-02 20:17:38,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:17:38,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:17:38,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:17:38,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:17:38,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:17:38,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:17:38,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:17:38,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:17:38,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:17:38,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:17:38,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:17:38,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:17:38,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:17:38,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:17:38,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:17:39,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:17:39,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:17:39,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:17:39,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:17:39,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:17:39,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:17:39,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:17:39,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:17:39,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:17:39,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:17:39,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:17:39,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:17:39,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:17:39,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:17:39,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:17:39,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:17:39,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:17:39,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:17:39,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:17:39,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:17:39,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:17:39,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:17:39,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:17:39,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:17:39,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:17:39,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 20:17:39,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:17:39,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:17:39,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:17:39,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:17:39,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:17:39,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:17:39,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:17:39,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:17:39,119 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:17:39,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:17:39,121 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:17:39,121 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:17:39,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:17:39,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:17:39,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:17:39,122 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:17:39,122 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:17:39,122 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:17:39,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:17:39,123 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:17:39,123 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:17:39,123 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:17:39,124 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:17:39,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:17:39,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:17:39,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:17:39,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:17:39,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:39,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:17:39,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:17:39,126 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:17:39,126 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:17:39,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:17:39,127 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_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408f3b7e084094987873e007e2bbb0a022372240d1ad946af6301d3e9707406 [2022-11-02 20:17:39,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:17:39,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:17:39,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:17:39,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:17:39,629 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:17:39,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2022-11-02 20:17:39,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data/cd5e74aba/155341a3c3b2487e96a183d12d551093/FLAG164b8848c [2022-11-02 20:17:40,368 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:17:40,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/sv-benchmarks/c/memsafety-ext2/optional_data_creation_test04-1.i [2022-11-02 20:17:40,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data/cd5e74aba/155341a3c3b2487e96a183d12d551093/FLAG164b8848c [2022-11-02 20:17:40,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/data/cd5e74aba/155341a3c3b2487e96a183d12d551093 [2022-11-02 20:17:40,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:17:40,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:17:40,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:40,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:17:40,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:17:40,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:40" (1/1) ... [2022-11-02 20:17:40,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7883e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:40, skipping insertion in model container [2022-11-02 20:17:40,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:40" (1/1) ... [2022-11-02 20:17:40,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:17:40,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:17:41,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:41,232 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:17:41,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:17:41,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:41,311 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:17:41,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:41,418 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:17:41,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41 WrapperNode [2022-11-02 20:17:41,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:41,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:17:41,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:17:41,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:17:41,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,490 INFO L138 Inliner]: procedures = 129, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110 [2022-11-02 20:17:41,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:17:41,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:17:41,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:17:41,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:17:41,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,523 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:17:41,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:17:41,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:17:41,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:17:41,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (1/1) ... [2022-11-02 20:17:41,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:41,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:41,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:17:41,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:17:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:17:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:17:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:17:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:17:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:17:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:17:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:17:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:17:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:17:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:17:41,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:17:41,735 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:17:41,737 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:17:42,507 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:17:42,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:17:42,515 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:17:42,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:17:42 BoogieIcfgContainer [2022-11-02 20:17:42,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:17:42,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:17:42,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:17:42,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:17:42,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:17:40" (1/3) ... [2022-11-02 20:17:42,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deb4693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:17:42, skipping insertion in model container [2022-11-02 20:17:42,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:41" (2/3) ... [2022-11-02 20:17:42,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deb4693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:17:42, skipping insertion in model container [2022-11-02 20:17:42,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:17:42" (3/3) ... [2022-11-02 20:17:42,544 INFO L112 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04-1.i [2022-11-02 20:17:42,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:17:42,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-11-02 20:17:42,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:17:42,669 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;@1e74de4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:17:42,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-02 20:17:42,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:17:42,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:42,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:17:42,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:42,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2022-11-02 20:17:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:42,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429684265] [2022-11-02 20:17:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:42,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:42,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:42,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:42,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:17:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:42,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:17:42,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:42,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:42,989 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 20:17:42,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:43,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:43,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:43,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429684265] [2022-11-02 20:17:43,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429684265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:43,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:43,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:17:43,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049812563] [2022-11-02 20:17:43,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:17:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:43,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:17:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:17:43,065 INFO L87 Difference]: Start difference. First operand has 98 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:43,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:43,508 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2022-11-02 20:17:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:17:43,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:17:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:43,521 INFO L225 Difference]: With dead ends: 148 [2022-11-02 20:17:43,521 INFO L226 Difference]: Without dead ends: 146 [2022-11-02 20:17:43,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:17:43,526 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 209 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:43,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 94 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:17:43,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-02 20:17:43,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 93. [2022-11-02 20:17:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 92 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2022-11-02 20:17:43,601 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 4 [2022-11-02 20:17:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:43,602 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2022-11-02 20:17:43,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2022-11-02 20:17:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:17:43,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:43,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:17:43,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:43,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:43,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:43,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:43,819 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2022-11-02 20:17:43,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:43,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139947075] [2022-11-02 20:17:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:43,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:43,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:43,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:17:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:43,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:17:43,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:43,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:43,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:44,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:17:44,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:44,126 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:17:44,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:44,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:44,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:44,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139947075] [2022-11-02 20:17:44,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139947075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:44,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:44,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:17:44,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76585853] [2022-11-02 20:17:44,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:44,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:17:44,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:17:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:17:44,167 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:44,873 INFO L93 Difference]: Finished difference Result 236 states and 253 transitions. [2022-11-02 20:17:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:17:44,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:17:44,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:44,876 INFO L225 Difference]: With dead ends: 236 [2022-11-02 20:17:44,876 INFO L226 Difference]: Without dead ends: 236 [2022-11-02 20:17:44,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:17:44,878 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 235 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:44,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 97 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:17:44,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-02 20:17:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 107. [2022-11-02 20:17:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.8208955223880596) internal successors, (122), 106 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2022-11-02 20:17:44,889 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 4 [2022-11-02 20:17:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:44,889 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2022-11-02 20:17:44,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:44,889 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2022-11-02 20:17:44,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:17:44,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:44,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:17:44,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:45,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:45,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:45,106 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2022-11-02 20:17:45,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:45,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509894944] [2022-11-02 20:17:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:45,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:45,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:45,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:45,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:17:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:45,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:17:45,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:45,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:45,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:45,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:45,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509894944] [2022-11-02 20:17:45,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509894944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:45,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:45,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:17:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619047323] [2022-11-02 20:17:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:17:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:45,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:17:45,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:45,232 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:45,470 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2022-11-02 20:17:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:17:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:17:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:45,473 INFO L225 Difference]: With dead ends: 136 [2022-11-02 20:17:45,473 INFO L226 Difference]: Without dead ends: 136 [2022-11-02 20:17:45,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:45,475 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 75 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:45,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 87 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:17:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-02 20:17:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 105. [2022-11-02 20:17:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 67 states have (on average 1.7761194029850746) internal successors, (119), 104 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2022-11-02 20:17:45,492 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 5 [2022-11-02 20:17:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:45,493 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2022-11-02 20:17:45,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2022-11-02 20:17:45,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:17:45,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:45,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:17:45,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:45,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:45,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:45,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:45,709 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2022-11-02 20:17:45,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:45,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291562869] [2022-11-02 20:17:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:45,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:45,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:45,711 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:45,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:17:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:45,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:17:45,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:45,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:45,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:45,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:45,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291562869] [2022-11-02 20:17:45,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291562869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:45,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:45,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:17:45,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485584552] [2022-11-02 20:17:45,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:45,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:17:45,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:45,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:17:45,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:45,831 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:46,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:46,197 INFO L93 Difference]: Finished difference Result 180 states and 203 transitions. [2022-11-02 20:17:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:17:46,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:17:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:46,199 INFO L225 Difference]: With dead ends: 180 [2022-11-02 20:17:46,199 INFO L226 Difference]: Without dead ends: 180 [2022-11-02 20:17:46,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:46,200 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 72 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:46,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 114 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:17:46,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-02 20:17:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 108. [2022-11-02 20:17:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.732394366197183) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:46,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2022-11-02 20:17:46,208 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 5 [2022-11-02 20:17:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:46,208 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2022-11-02 20:17:46,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2022-11-02 20:17:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:17:46,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:46,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:46,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:46,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:46,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:46,432 INFO L85 PathProgramCache]: Analyzing trace with hash 234239181, now seen corresponding path program 1 times [2022-11-02 20:17:46,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:46,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217953063] [2022-11-02 20:17:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:46,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:46,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:46,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:46,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:17:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:46,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:17:46,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:46,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:46,579 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 20:17:46,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:46,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:46,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:46,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217953063] [2022-11-02 20:17:46,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217953063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:46,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:46,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:17:46,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263143886] [2022-11-02 20:17:46,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:46,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:17:46,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:46,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:17:46,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:46,599 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:46,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:46,891 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2022-11-02 20:17:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:17:46,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:17:46,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:46,893 INFO L225 Difference]: With dead ends: 151 [2022-11-02 20:17:46,893 INFO L226 Difference]: Without dead ends: 151 [2022-11-02 20:17:46,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:17:46,894 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 69 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:46,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 144 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:17:46,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-02 20:17:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 104. [2022-11-02 20:17:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 71 states have (on average 1.6619718309859155) internal successors, (118), 103 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2022-11-02 20:17:46,907 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 9 [2022-11-02 20:17:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:46,907 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2022-11-02 20:17:46,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2022-11-02 20:17:46,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:17:46,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:46,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:46,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:47,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:47,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash 234239182, now seen corresponding path program 1 times [2022-11-02 20:17:47,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:47,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388573686] [2022-11-02 20:17:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:47,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:47,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:47,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:47,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:17:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:47,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:17:47,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:47,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:47,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:47,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:17:47,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:47,327 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:17:47,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:47,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:47,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:47,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388573686] [2022-11-02 20:17:47,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388573686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:47,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:47,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:17:47,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810593232] [2022-11-02 20:17:47,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:47,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:17:47,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:47,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:17:47,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:17:47,353 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:47,802 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions. [2022-11-02 20:17:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:17:47,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:17:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:47,804 INFO L225 Difference]: With dead ends: 200 [2022-11-02 20:17:47,804 INFO L226 Difference]: Without dead ends: 200 [2022-11-02 20:17:47,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:17:47,805 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 183 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:47,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 166 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:17:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-02 20:17:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 100. [2022-11-02 20:17:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.591549295774648) internal successors, (113), 99 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2022-11-02 20:17:47,812 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 9 [2022-11-02 20:17:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:47,813 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2022-11-02 20:17:47,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2022-11-02 20:17:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:17:47,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:47,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:47,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:48,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:48,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:48,028 INFO L85 PathProgramCache]: Analyzing trace with hash 184732728, now seen corresponding path program 1 times [2022-11-02 20:17:48,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:48,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755285014] [2022-11-02 20:17:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:48,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:48,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:48,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:48,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:17:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:17:48,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:48,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:48,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:48,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:48,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:48,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:48,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755285014] [2022-11-02 20:17:48,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755285014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:48,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:48,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:17:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109603478] [2022-11-02 20:17:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:48,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:17:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:17:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:17:48,220 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:48,642 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2022-11-02 20:17:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:17:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:17:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:48,643 INFO L225 Difference]: With dead ends: 109 [2022-11-02 20:17:48,644 INFO L226 Difference]: Without dead ends: 109 [2022-11-02 20:17:48,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:17:48,645 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:48,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 216 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:17:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-02 20:17:48,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2022-11-02 20:17:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5945945945945945) internal successors, (118), 102 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2022-11-02 20:17:48,649 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 13 [2022-11-02 20:17:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:48,649 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2022-11-02 20:17:48,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:48,650 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2022-11-02 20:17:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:17:48,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:48,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:48,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-02 20:17:48,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:48,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:48,859 INFO L85 PathProgramCache]: Analyzing trace with hash 184732729, now seen corresponding path program 1 times [2022-11-02 20:17:48,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:48,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133454171] [2022-11-02 20:17:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:48,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:48,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:48,860 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:48,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:17:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:48,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:17:48,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:48,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:48,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:49,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:49,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 9 [2022-11-02 20:17:49,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 [2022-11-02 20:17:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:49,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:49,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:49,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133454171] [2022-11-02 20:17:49,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133454171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:49,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:49,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:17:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342844407] [2022-11-02 20:17:49,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:49,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:17:49,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:17:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:17:49,119 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:49,555 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2022-11-02 20:17:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:17:49,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:17:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:49,556 INFO L225 Difference]: With dead ends: 104 [2022-11-02 20:17:49,556 INFO L226 Difference]: Without dead ends: 104 [2022-11-02 20:17:49,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:17:49,559 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 5 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:49,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 218 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:17:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-02 20:17:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2022-11-02 20:17:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.5675675675675675) internal successors, (116), 102 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2022-11-02 20:17:49,563 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 13 [2022-11-02 20:17:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:49,564 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2022-11-02 20:17:49,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2022-11-02 20:17:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:17:49,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:49,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:49,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:49,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:49,776 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1897191059, now seen corresponding path program 1 times [2022-11-02 20:17:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:49,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186938607] [2022-11-02 20:17:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:49,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:49,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:49,779 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:49,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:17:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:49,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:17:49,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:50,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:17:50,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:17:50,071 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:17:50,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:50,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:50,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:50,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186938607] [2022-11-02 20:17:50,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186938607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:50,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:50,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:17:50,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60276268] [2022-11-02 20:17:50,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:50,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:17:50,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:17:50,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:17:50,151 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:50,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:50,523 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2022-11-02 20:17:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:17:50,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:17:50,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:50,525 INFO L225 Difference]: With dead ends: 133 [2022-11-02 20:17:50,525 INFO L226 Difference]: Without dead ends: 133 [2022-11-02 20:17:50,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:17:50,526 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 411 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:50,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 65 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:17:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-02 20:17:50,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2022-11-02 20:17:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5857142857142856) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:50,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2022-11-02 20:17:50,530 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 15 [2022-11-02 20:17:50,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:50,530 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2022-11-02 20:17:50,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:50,531 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2022-11-02 20:17:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:17:50,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:50,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:50,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:50,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:50,732 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:50,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:50,733 INFO L85 PathProgramCache]: Analyzing trace with hash -734113802, now seen corresponding path program 1 times [2022-11-02 20:17:50,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:50,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735545960] [2022-11-02 20:17:50,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:50,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:50,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:50,734 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:50,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:17:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:50,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:17:50,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:50,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:17:50,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:50,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:50,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:50,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735545960] [2022-11-02 20:17:50,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735545960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:50,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:50,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:17:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612040608] [2022-11-02 20:17:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:17:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:17:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:17:50,990 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:51,308 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2022-11-02 20:17:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:17:51,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:17:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:51,309 INFO L225 Difference]: With dead ends: 137 [2022-11-02 20:17:51,309 INFO L226 Difference]: Without dead ends: 137 [2022-11-02 20:17:51,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:17:51,310 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 164 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:51,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 174 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:17:51,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-02 20:17:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2022-11-02 20:17:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5714285714285714) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:51,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2022-11-02 20:17:51,315 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 17 [2022-11-02 20:17:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:51,315 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2022-11-02 20:17:51,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:51,316 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2022-11-02 20:17:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:17:51,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:51,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:51,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:51,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:51,522 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:51,523 INFO L85 PathProgramCache]: Analyzing trace with hash -734113798, now seen corresponding path program 1 times [2022-11-02 20:17:51,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:51,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626113403] [2022-11-02 20:17:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:51,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:51,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:51,525 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:51,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:17:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:51,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:17:51,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:51,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:51,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:51,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:51,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:51,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:51,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626113403] [2022-11-02 20:17:51,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626113403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:51,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:51,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:17:51,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574717962] [2022-11-02 20:17:51,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:51,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:17:51,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:51,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:17:51,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:17:51,831 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:52,337 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2022-11-02 20:17:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:17:52,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:17:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:52,339 INFO L225 Difference]: With dead ends: 129 [2022-11-02 20:17:52,339 INFO L226 Difference]: Without dead ends: 129 [2022-11-02 20:17:52,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:17:52,340 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 97 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:52,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 158 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:17:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-02 20:17:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 98. [2022-11-02 20:17:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2022-11-02 20:17:52,344 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 17 [2022-11-02 20:17:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:52,345 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2022-11-02 20:17:52,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:52,345 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2022-11-02 20:17:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:17:52,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:52,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:52,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-02 20:17:52,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:52,560 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash -734113797, now seen corresponding path program 1 times [2022-11-02 20:17:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:52,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228445890] [2022-11-02 20:17:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:52,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:52,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:52,563 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:52,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:17:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:52,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:17:52,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:52,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:52,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:52,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:52,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:52,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:17:52,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:52,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:52,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228445890] [2022-11-02 20:17:52,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228445890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:52,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:52,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:17:52,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133103553] [2022-11-02 20:17:52,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:52,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:17:52,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:52,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:17:52,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:17:52,953 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:53,647 INFO L93 Difference]: Finished difference Result 201 states and 219 transitions. [2022-11-02 20:17:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:17:53,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:17:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:53,649 INFO L225 Difference]: With dead ends: 201 [2022-11-02 20:17:53,650 INFO L226 Difference]: Without dead ends: 201 [2022-11-02 20:17:53,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:17:53,651 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 148 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:53,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 221 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:17:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-02 20:17:53,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 106. [2022-11-02 20:17:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 105 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2022-11-02 20:17:53,656 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 17 [2022-11-02 20:17:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:53,656 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2022-11-02 20:17:53,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2022-11-02 20:17:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:17:53,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:53,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:53,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:53,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:53,866 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:53,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:53,867 INFO L85 PathProgramCache]: Analyzing trace with hash 50233868, now seen corresponding path program 1 times [2022-11-02 20:17:53,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:53,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547319458] [2022-11-02 20:17:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:53,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:53,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:53,868 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:53,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:17:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:54,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:17:54,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:54,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:54,090 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:17:54,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 20:17:54,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:17:54,270 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:17:54,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 37 [2022-11-02 20:17:54,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 15 [2022-11-02 20:17:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:17:54,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:17:54,546 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0) v_ArrVal_261) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-02 20:17:54,575 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:17:54,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-02 20:17:54,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 [2022-11-02 20:17:54,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:17:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-02 20:17:58,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:17:58,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547319458] [2022-11-02 20:17:58,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547319458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:17:58,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:17:58,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2022-11-02 20:17:58,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4115458] [2022-11-02 20:17:58,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:17:58,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:17:58,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:17:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:17:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=95, Unknown=3, NotChecked=20, Total=156 [2022-11-02 20:17:58,746 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:59,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:17:59,444 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2022-11-02 20:17:59,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:17:59,445 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:17:59,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:17:59,446 INFO L225 Difference]: With dead ends: 154 [2022-11-02 20:17:59,446 INFO L226 Difference]: Without dead ends: 154 [2022-11-02 20:17:59,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=46, Invalid=111, Unknown=3, NotChecked=22, Total=182 [2022-11-02 20:17:59,447 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 78 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:17:59,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 562 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 225 Invalid, 0 Unknown, 330 Unchecked, 0.6s Time] [2022-11-02 20:17:59,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-02 20:17:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 105. [2022-11-02 20:17:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 78 states have (on average 1.5) internal successors, (117), 104 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2022-11-02 20:17:59,452 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 18 [2022-11-02 20:17:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:17:59,452 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2022-11-02 20:17:59,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2022-11-02 20:17:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:17:59,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:17:59,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:59,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:59,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:17:59,668 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:17:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash 50233869, now seen corresponding path program 1 times [2022-11-02 20:17:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:17:59,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615483310] [2022-11-02 20:17:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:59,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:17:59,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:17:59,670 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:17:59,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:17:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:59,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:17:59,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:59,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:59,917 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:17:59,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:59,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:17:59,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:59,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:18:00,229 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:18:00,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 45 [2022-11-02 20:18:00,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-11-02 20:18:00,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 13 [2022-11-02 20:18:00,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:18:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:18:00,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:18:01,054 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (and (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0) (_ bv8 32) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_304) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0)))) (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse0))) (bvule (bvadd .cse2 (_ bv4 32) .cse1) (bvadd .cse2 (_ bv8 32) .cse1)))))) is different from false [2022-11-02 20:18:01,114 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (and (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) .cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_304) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))))))) is different from false [2022-11-02 20:18:01,205 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (and (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_304) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)))) (forall ((v_ArrVal_303 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_303) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2022-11-02 20:18:01,228 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:18:01,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-11-02 20:18:01,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 36 [2022-11-02 20:18:01,266 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:18:01,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-02 20:18:01,282 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:18:01,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-02 20:18:01,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:18:01,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-02 20:18:01,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:18:01,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-02 20:18:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 20:18:01,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:18:01,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615483310] [2022-11-02 20:18:01,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615483310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:18:01,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:18:01,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-02 20:18:01,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734846215] [2022-11-02 20:18:01,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:18:01,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:18:01,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:18:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:18:01,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=124, Unknown=3, NotChecked=72, Total=240 [2022-11-02 20:18:01,423 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:05,153 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2022-11-02 20:18:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:18:05,154 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:18:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:05,156 INFO L225 Difference]: With dead ends: 160 [2022-11-02 20:18:05,156 INFO L226 Difference]: Without dead ends: 160 [2022-11-02 20:18:05,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=92, Invalid=297, Unknown=3, NotChecked=114, Total=506 [2022-11-02 20:18:05,157 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 80 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:05,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 683 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 475 Invalid, 0 Unknown, 303 Unchecked, 2.6s Time] [2022-11-02 20:18:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-02 20:18:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 110. [2022-11-02 20:18:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 109 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2022-11-02 20:18:05,161 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 18 [2022-11-02 20:18:05,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:05,162 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2022-11-02 20:18:05,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:05,162 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2022-11-02 20:18:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:18:05,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:05,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:05,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:05,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:18:05,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:18:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -10622392, now seen corresponding path program 1 times [2022-11-02 20:18:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:18:05,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943011540] [2022-11-02 20:18:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:05,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:18:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:18:05,390 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:18:05,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:18:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:05,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:18:05,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:05,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:05,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:05,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:18:05,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:05,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:18:05,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943011540] [2022-11-02 20:18:05,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943011540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:05,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:05,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:18:05,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516160898] [2022-11-02 20:18:05,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:05,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:18:05,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:18:05,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:18:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:18:05,691 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:06,146 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2022-11-02 20:18:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:18:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 20:18:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:06,148 INFO L225 Difference]: With dead ends: 146 [2022-11-02 20:18:06,148 INFO L226 Difference]: Without dead ends: 146 [2022-11-02 20:18:06,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:18:06,149 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 133 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:06,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 160 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:18:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-02 20:18:06,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2022-11-02 20:18:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:06,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2022-11-02 20:18:06,154 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 20 [2022-11-02 20:18:06,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:06,154 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2022-11-02 20:18:06,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2022-11-02 20:18:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:18:06,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:06,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:06,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:06,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:18:06,366 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:18:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:06,366 INFO L85 PathProgramCache]: Analyzing trace with hash -10622391, now seen corresponding path program 1 times [2022-11-02 20:18:06,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:18:06,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034522684] [2022-11-02 20:18:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:06,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:18:06,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:18:06,370 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:18:06,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:18:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:06,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:18:06,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:06,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:06,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:06,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:06,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:06,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:18:06,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:06,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:18:06,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034522684] [2022-11-02 20:18:06,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034522684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:06,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:06,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:18:06,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990907105] [2022-11-02 20:18:06,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:06,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:18:06,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:18:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:18:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:18:06,763 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:07,386 INFO L93 Difference]: Finished difference Result 203 states and 220 transitions. [2022-11-02 20:18:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:18:07,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 20:18:07,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:07,387 INFO L225 Difference]: With dead ends: 203 [2022-11-02 20:18:07,387 INFO L226 Difference]: Without dead ends: 203 [2022-11-02 20:18:07,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:18:07,388 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 164 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:07,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 187 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:18:07,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-02 20:18:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 113. [2022-11-02 20:18:07,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 86 states have (on average 1.441860465116279) internal successors, (124), 112 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2022-11-02 20:18:07,394 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 20 [2022-11-02 20:18:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:07,394 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2022-11-02 20:18:07,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2022-11-02 20:18:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:18:07,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:07,396 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] [2022-11-02 20:18:07,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:07,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:18:07,602 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:18:07,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:07,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1375969503, now seen corresponding path program 1 times [2022-11-02 20:18:07,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:18:07,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524886333] [2022-11-02 20:18:07,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:18:07,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:18:07,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:18:07,604 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:18:07,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:18:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:18:07,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:18:07,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:07,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:07,770 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:18:07,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:07,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:18:07,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:18:08,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-11-02 20:18:08,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 22 [2022-11-02 20:18:08,220 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-02 20:18:08,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:08,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:18:08,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:08,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:18:08,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524886333] [2022-11-02 20:18:08,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524886333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:08,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:08,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:18:08,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46024495] [2022-11-02 20:18:08,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:08,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:18:08,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:18:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:18:08,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:18:08,310 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:18:09,867 INFO L93 Difference]: Finished difference Result 183 states and 193 transitions. [2022-11-02 20:18:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:18:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-02 20:18:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:18:09,868 INFO L225 Difference]: With dead ends: 183 [2022-11-02 20:18:09,869 INFO L226 Difference]: Without dead ends: 183 [2022-11-02 20:18:09,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:18:09,870 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 196 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:18:09,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 589 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 424 Invalid, 0 Unknown, 59 Unchecked, 1.1s Time] [2022-11-02 20:18:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-02 20:18:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 128. [2022-11-02 20:18:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 101 states have (on average 1.386138613861386) internal successors, (140), 127 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2022-11-02 20:18:09,874 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 23 [2022-11-02 20:18:09,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:18:09,874 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2022-11-02 20:18:09,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2022-11-02 20:18:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:18:09,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:18:09,875 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:18:09,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:18:10,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:18:10,090 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:18:10,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:18:10,090 INFO L85 PathProgramCache]: Analyzing trace with hash 382685369, now seen corresponding path program 2 times [2022-11-02 20:18:10,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:18:10,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131606816] [2022-11-02 20:18:10,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:18:10,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:18:10,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:18:10,092 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:18:10,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:18:10,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:18:10,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:18:10,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:18:10,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:10,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:10,352 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:18:10,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:10,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:18:10,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:18:10,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:10,592 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:18:10,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 45 [2022-11-02 20:18:10,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-11-02 20:18:10,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 68 treesize of output 64 [2022-11-02 20:18:10,823 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:18:10,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 56 treesize of output 55 [2022-11-02 20:18:10,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 13 [2022-11-02 20:18:10,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:18:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:18:10,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:18:11,950 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (let ((.cse0 (bvadd (_ bv4 32) .cse2 .cse3)) (.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (or (not (bvule .cse0 (select |c_#length| .cse1))) (not (bvule (bvadd .cse2 .cse3) .cse0)) (and (forall ((v_ArrVal_446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) .cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_446) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)))) (forall ((v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (bvule (bvadd (_ bv4 32) .cse2 .cse5) (bvadd (_ bv8 32) .cse2 .cse5))))))))) is different from false [2022-11-02 20:18:16,345 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:18:16,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 152 [2022-11-02 20:18:16,376 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:18:16,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 86 [2022-11-02 20:18:16,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 730 treesize of output 610 [2022-11-02 20:18:16,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2320 treesize of output 2146 [2022-11-02 20:18:16,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2030 treesize of output 1870 [2022-11-02 20:18:16,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1667 treesize of output 1587 [2022-11-02 20:18:16,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1876 treesize of output 1572 [2022-11-02 20:18:16,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1510 treesize of output 1350 [2022-11-02 20:18:50,922 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:18:50,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 142 [2022-11-02 20:18:50,981 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:18:50,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 86 [2022-11-02 20:18:51,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 156 treesize of output 132 [2022-11-02 20:18:51,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 422 treesize of output 356 [2022-11-02 20:18:51,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 281 treesize of output 249 [2022-11-02 20:18:51,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 176 [2022-11-02 20:18:51,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 219 [2022-11-02 20:19:05,221 WARN L234 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 131 DAG size of output: 68 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:19:05,645 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:19:05,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 243 treesize of output 306 [2022-11-02 20:19:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 1 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-02 20:19:09,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:09,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131606816] [2022-11-02 20:19:09,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131606816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:19:09,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:19:09,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2022-11-02 20:19:09,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895815841] [2022-11-02 20:19:09,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:19:09,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:19:09,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:19:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=291, Unknown=14, NotChecked=36, Total=420 [2022-11-02 20:19:09,043 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:15,205 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse6 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (let ((.cse7 (bvadd (_ bv8 32) .cse1 .cse6)) (.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (let ((.cse0 (bvule .cse7 (select |c_#length| .cse3))) (.cse5 (bvule (bvadd (_ bv4 32) .cse1 .cse6) .cse7))) (and .cse0 (or (and (forall ((v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (bvule (bvadd (_ bv8 32) .cse1 .cse2) (bvadd .cse1 .cse2 (_ bv12 32))))) (forall ((v_ArrVal_446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd .cse1 (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_446) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))))) (not .cse0) (not .cse5)) .cse5))))) is different from false [2022-11-02 20:19:15,371 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse6 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (let ((.cse7 (bvadd (_ bv4 32) .cse2 .cse6)) (.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (let ((.cse0 (bvule .cse7 (select |c_#length| .cse3))) (.cse1 (bvule (bvadd .cse2 .cse6) .cse7))) (and .cse0 (or (not .cse0) (not .cse1) (and (forall ((v_ArrVal_446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) .cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_446) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4)))) (forall ((v_ArrVal_447 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_447) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse4))) (bvule (bvadd (_ bv4 32) .cse2 .cse5) (bvadd (_ bv8 32) .cse2 .cse5)))))) .cse1))))) is different from false [2022-11-02 20:19:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:18,747 INFO L93 Difference]: Finished difference Result 182 states and 195 transitions. [2022-11-02 20:19:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:19:18,748 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-02 20:19:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:18,749 INFO L225 Difference]: With dead ends: 182 [2022-11-02 20:19:18,749 INFO L226 Difference]: Without dead ends: 182 [2022-11-02 20:19:18,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=238, Invalid=872, Unknown=24, NotChecked=198, Total=1332 [2022-11-02 20:19:18,750 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 108 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 586 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:18,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 777 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 442 Invalid, 0 Unknown, 586 Unchecked, 3.0s Time] [2022-11-02 20:19:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-02 20:19:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 143. [2022-11-02 20:19:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 116 states have (on average 1.353448275862069) internal successors, (157), 142 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2022-11-02 20:19:18,755 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 23 [2022-11-02 20:19:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:18,755 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2022-11-02 20:19:18,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 21 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:18,756 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2022-11-02 20:19:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:19:18,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:18,757 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] [2022-11-02 20:19:18,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:18,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:18,966 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:18,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:18,967 INFO L85 PathProgramCache]: Analyzing trace with hash -543267076, now seen corresponding path program 1 times [2022-11-02 20:19:18,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:18,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183702683] [2022-11-02 20:19:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:18,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:18,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:18,969 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:18,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:19:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:19,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:19:19,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:19,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:19,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:19,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:19,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:19,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183702683] [2022-11-02 20:19:19,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183702683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:19,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:19,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:19:19,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740877716] [2022-11-02 20:19:19,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:19,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:19:19,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:19:19,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:19:19,297 INFO L87 Difference]: Start difference. First operand 143 states and 157 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:19,696 INFO L93 Difference]: Finished difference Result 177 states and 190 transitions. [2022-11-02 20:19:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:19:19,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-02 20:19:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:19,698 INFO L225 Difference]: With dead ends: 177 [2022-11-02 20:19:19,698 INFO L226 Difference]: Without dead ends: 177 [2022-11-02 20:19:19,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:19:19,699 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 155 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:19,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 169 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:19:19,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-02 20:19:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 155. [2022-11-02 20:19:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 128 states have (on average 1.421875) internal successors, (182), 154 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2022-11-02 20:19:19,704 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 25 [2022-11-02 20:19:19,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:19,704 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2022-11-02 20:19:19,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2022-11-02 20:19:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 20:19:19,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:19,705 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] [2022-11-02 20:19:19,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:19,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:19,918 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:19,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:19,919 INFO L85 PathProgramCache]: Analyzing trace with hash 338589996, now seen corresponding path program 1 times [2022-11-02 20:19:19,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:19,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5320465] [2022-11-02 20:19:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:19,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:19,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:19,920 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:19,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:19:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:20,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:19:20,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:20,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:19:20,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:20,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:20,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:20,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5320465] [2022-11-02 20:19:20,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5320465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:20,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:20,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:19:20,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462812071] [2022-11-02 20:19:20,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:20,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:19:20,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:19:20,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:19:20,495 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:21,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:21,107 INFO L93 Difference]: Finished difference Result 178 states and 191 transitions. [2022-11-02 20:19:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:19:21,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-02 20:19:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:21,109 INFO L225 Difference]: With dead ends: 178 [2022-11-02 20:19:21,109 INFO L226 Difference]: Without dead ends: 178 [2022-11-02 20:19:21,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:19:21,110 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 154 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:21,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 144 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:19:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-02 20:19:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 156. [2022-11-02 20:19:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 129 states have (on average 1.4186046511627908) internal successors, (183), 155 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:21,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2022-11-02 20:19:21,115 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 26 [2022-11-02 20:19:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:21,116 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2022-11-02 20:19:21,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2022-11-02 20:19:21,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:19:21,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:21,117 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] [2022-11-02 20:19:21,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:21,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:21,329 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:21,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:21,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1906355454, now seen corresponding path program 1 times [2022-11-02 20:19:21,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:21,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503782862] [2022-11-02 20:19:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:21,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:21,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:21,331 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:21,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:19:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:21,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:19:21,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:21,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:21,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:21,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:21,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:21,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:21,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503782862] [2022-11-02 20:19:21,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503782862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:21,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:21,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:19:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566033845] [2022-11-02 20:19:21,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:21,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:19:21,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:21,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:19:21,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:19:21,643 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:22,175 INFO L93 Difference]: Finished difference Result 177 states and 195 transitions. [2022-11-02 20:19:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:19:22,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 20:19:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:22,179 INFO L225 Difference]: With dead ends: 177 [2022-11-02 20:19:22,179 INFO L226 Difference]: Without dead ends: 177 [2022-11-02 20:19:22,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:19:22,180 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 78 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:22,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 164 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:19:22,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-02 20:19:22,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 159. [2022-11-02 20:19:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 132 states have (on average 1.4090909090909092) internal successors, (186), 158 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2022-11-02 20:19:22,184 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 27 [2022-11-02 20:19:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:22,185 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2022-11-02 20:19:22,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2022-11-02 20:19:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:19:22,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:22,186 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] [2022-11-02 20:19:22,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-02 20:19:22,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:22,390 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:22,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2126823547, now seen corresponding path program 1 times [2022-11-02 20:19:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:22,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975459563] [2022-11-02 20:19:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:22,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:22,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:22,392 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:22,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:19:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:22,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:19:22,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:22,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:22,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:22,986 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:19:22,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 26 [2022-11-02 20:19:23,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:23,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:23,267 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:19:23,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 29 [2022-11-02 20:19:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:23,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:23,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:23,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975459563] [2022-11-02 20:19:23,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975459563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:23,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:23,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:19:23,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830396666] [2022-11-02 20:19:23,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:23,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:19:23,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:23,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:19:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:19:23,337 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:25,395 INFO L93 Difference]: Finished difference Result 214 states and 242 transitions. [2022-11-02 20:19:25,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:19:25,397 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 20:19:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:25,398 INFO L225 Difference]: With dead ends: 214 [2022-11-02 20:19:25,398 INFO L226 Difference]: Without dead ends: 214 [2022-11-02 20:19:25,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:19:25,399 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 204 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:25,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 370 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 424 Invalid, 0 Unknown, 82 Unchecked, 1.2s Time] [2022-11-02 20:19:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-02 20:19:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 164. [2022-11-02 20:19:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 138 states have (on average 1.3985507246376812) internal successors, (193), 163 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2022-11-02 20:19:25,406 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 27 [2022-11-02 20:19:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:25,406 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2022-11-02 20:19:25,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2022-11-02 20:19:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:19:25,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:25,408 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] [2022-11-02 20:19:25,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:25,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:25,622 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:25,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:25,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2126823546, now seen corresponding path program 1 times [2022-11-02 20:19:25,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:25,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244401810] [2022-11-02 20:19:25,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:25,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:25,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:25,624 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:25,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:19:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:25,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 20:19:25,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:25,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:25,834 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:19:25,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:25,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:26,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:19:26,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:19:26,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-11-02 20:19:26,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 24 [2022-11-02 20:19:26,491 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-02 20:19:26,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:26,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:26,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:26,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244401810] [2022-11-02 20:19:26,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244401810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:26,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:26,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:19:26,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539241214] [2022-11-02 20:19:26,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:26,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:19:26,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:19:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:19:26,594 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:30,068 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2022-11-02 20:19:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:19:30,070 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 20:19:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:30,070 INFO L225 Difference]: With dead ends: 282 [2022-11-02 20:19:30,071 INFO L226 Difference]: Without dead ends: 282 [2022-11-02 20:19:30,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=213, Invalid=543, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:19:30,072 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 628 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:30,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 427 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 592 Invalid, 0 Unknown, 81 Unchecked, 1.9s Time] [2022-11-02 20:19:30,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-02 20:19:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 174. [2022-11-02 20:19:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 148 states have (on average 1.4054054054054055) internal successors, (208), 173 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2022-11-02 20:19:30,077 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 27 [2022-11-02 20:19:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:30,077 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2022-11-02 20:19:30,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:30,078 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2022-11-02 20:19:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:19:30,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:30,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:30,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-02 20:19:30,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:30,290 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:30,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1032522897, now seen corresponding path program 1 times [2022-11-02 20:19:30,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:30,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051911037] [2022-11-02 20:19:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:30,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:30,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:30,292 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:30,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:19:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:30,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:19:30,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:30,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:19:30,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:30,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:31,148 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:19:31,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 18 [2022-11-02 20:19:31,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:31,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:31,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:31,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051911037] [2022-11-02 20:19:31,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051911037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:31,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:31,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:19:31,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751626251] [2022-11-02 20:19:31,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:31,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:19:31,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:31,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:19:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:19:31,260 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:33,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:33,371 INFO L93 Difference]: Finished difference Result 198 states and 222 transitions. [2022-11-02 20:19:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:19:33,372 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-02 20:19:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:33,373 INFO L225 Difference]: With dead ends: 198 [2022-11-02 20:19:33,373 INFO L226 Difference]: Without dead ends: 198 [2022-11-02 20:19:33,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:19:33,374 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 208 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:33,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 301 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:19:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-02 20:19:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2022-11-02 20:19:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 149 states have (on average 1.4093959731543624) internal successors, (210), 174 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:33,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 210 transitions. [2022-11-02 20:19:33,379 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 210 transitions. Word has length 28 [2022-11-02 20:19:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:33,380 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 210 transitions. [2022-11-02 20:19:33,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 210 transitions. [2022-11-02 20:19:33,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:19:33,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:33,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:33,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:33,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:33,586 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1032522896, now seen corresponding path program 1 times [2022-11-02 20:19:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:33,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749494244] [2022-11-02 20:19:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:33,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:33,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:33,588 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:33,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:19:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:33,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:19:33,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:33,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:33,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:33,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749494244] [2022-11-02 20:19:33,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749494244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:33,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:33,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:19:33,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408133083] [2022-11-02 20:19:33,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:33,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:19:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:19:33,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:19:33,935 INFO L87 Difference]: Start difference. First operand 175 states and 210 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:34,162 INFO L93 Difference]: Finished difference Result 170 states and 202 transitions. [2022-11-02 20:19:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:19:34,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-02 20:19:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:34,165 INFO L225 Difference]: With dead ends: 170 [2022-11-02 20:19:34,165 INFO L226 Difference]: Without dead ends: 170 [2022-11-02 20:19:34,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:19:34,166 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 70 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:34,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 50 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:19:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-02 20:19:34,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-02 20:19:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 149 states have (on average 1.3557046979865772) internal successors, (202), 169 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 202 transitions. [2022-11-02 20:19:34,171 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 202 transitions. Word has length 28 [2022-11-02 20:19:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:34,171 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 202 transitions. [2022-11-02 20:19:34,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 202 transitions. [2022-11-02 20:19:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:19:34,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:34,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:19:34,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:34,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:34,373 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1614814932, now seen corresponding path program 1 times [2022-11-02 20:19:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:34,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101802730] [2022-11-02 20:19:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:34,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:34,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:34,375 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:34,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:19:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:34,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:19:34,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:34,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:19:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:34,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:34,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101802730] [2022-11-02 20:19:34,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101802730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:19:34,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:19:34,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 20:19:34,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30461801] [2022-11-02 20:19:34,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:19:34,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:19:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:19:34,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:19:34,849 INFO L87 Difference]: Start difference. First operand 170 states and 202 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:35,277 INFO L93 Difference]: Finished difference Result 185 states and 215 transitions. [2022-11-02 20:19:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:19:35,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-02 20:19:35,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:35,278 INFO L225 Difference]: With dead ends: 185 [2022-11-02 20:19:35,278 INFO L226 Difference]: Without dead ends: 185 [2022-11-02 20:19:35,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:19:35,279 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 42 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:35,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 381 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:19:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-02 20:19:35,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2022-11-02 20:19:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 162 states have (on average 1.3271604938271604) internal successors, (215), 182 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 215 transitions. [2022-11-02 20:19:35,284 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 215 transitions. Word has length 30 [2022-11-02 20:19:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:35,284 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 215 transitions. [2022-11-02 20:19:35,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 215 transitions. [2022-11-02 20:19:35,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:19:35,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:35,285 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] [2022-11-02 20:19:35,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:35,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:35,490 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash -842646633, now seen corresponding path program 1 times [2022-11-02 20:19:35,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:35,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322599628] [2022-11-02 20:19:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:35,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:35,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:35,492 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:35,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:19:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:35,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:19:35,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:35,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:35,742 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:19:35,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:36,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:19:36,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 18 [2022-11-02 20:19:36,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:36,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:36,456 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 20:19:36,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:36,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:36,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:36,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322599628] [2022-11-02 20:19:36,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322599628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:36,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:36,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:19:36,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752060634] [2022-11-02 20:19:36,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:36,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:19:36,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:36,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:19:36,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:19:36,580 INFO L87 Difference]: Start difference. First operand 183 states and 215 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:40,358 INFO L93 Difference]: Finished difference Result 284 states and 304 transitions. [2022-11-02 20:19:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:19:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-02 20:19:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:40,361 INFO L225 Difference]: With dead ends: 284 [2022-11-02 20:19:40,362 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 20:19:40,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=246, Invalid=684, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:19:40,363 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 548 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:40,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 449 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 551 Invalid, 0 Unknown, 100 Unchecked, 2.1s Time] [2022-11-02 20:19:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 20:19:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 183. [2022-11-02 20:19:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 162 states have (on average 1.3148148148148149) internal successors, (213), 182 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 213 transitions. [2022-11-02 20:19:40,368 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 213 transitions. Word has length 30 [2022-11-02 20:19:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:40,369 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 213 transitions. [2022-11-02 20:19:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 213 transitions. [2022-11-02 20:19:40,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:19:40,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:40,370 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] [2022-11-02 20:19:40,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-02 20:19:40,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:40,590 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:40,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash -842657618, now seen corresponding path program 1 times [2022-11-02 20:19:40,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:40,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348560422] [2022-11-02 20:19:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:40,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:40,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:40,593 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:40,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:19:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:40,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:19:40,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:40,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 [2022-11-02 20:19:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:40,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:40,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:40,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348560422] [2022-11-02 20:19:40,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348560422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:40,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:40,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:19:40,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766956179] [2022-11-02 20:19:40,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:40,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:19:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:40,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:19:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:19:40,798 INFO L87 Difference]: Start difference. First operand 183 states and 213 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:41,206 INFO L93 Difference]: Finished difference Result 199 states and 226 transitions. [2022-11-02 20:19:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:19:41,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-02 20:19:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:41,208 INFO L225 Difference]: With dead ends: 199 [2022-11-02 20:19:41,208 INFO L226 Difference]: Without dead ends: 199 [2022-11-02 20:19:41,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:19:41,209 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 27 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:41,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 242 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:19:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-02 20:19:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 182. [2022-11-02 20:19:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 162 states have (on average 1.2962962962962963) internal successors, (210), 181 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 210 transitions. [2022-11-02 20:19:41,213 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 210 transitions. Word has length 30 [2022-11-02 20:19:41,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:41,214 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 210 transitions. [2022-11-02 20:19:41,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 210 transitions. [2022-11-02 20:19:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:19:41,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:41,215 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] [2022-11-02 20:19:41,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:41,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:41,426 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:41,426 INFO L85 PathProgramCache]: Analyzing trace with hash -352582234, now seen corresponding path program 1 times [2022-11-02 20:19:41,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:41,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600967793] [2022-11-02 20:19:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:41,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:41,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:41,428 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:41,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:19:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:41,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:19:41,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:41,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 [2022-11-02 20:19:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:41,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:19:41,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:41,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600967793] [2022-11-02 20:19:41,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600967793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:19:41,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:19:41,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:19:41,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306846968] [2022-11-02 20:19:41,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:19:41,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:19:41,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:41,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:19:41,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:19:41,768 INFO L87 Difference]: Start difference. First operand 182 states and 210 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:42,267 INFO L93 Difference]: Finished difference Result 197 states and 220 transitions. [2022-11-02 20:19:42,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:19:42,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-02 20:19:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:42,269 INFO L225 Difference]: With dead ends: 197 [2022-11-02 20:19:42,269 INFO L226 Difference]: Without dead ends: 197 [2022-11-02 20:19:42,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:19:42,270 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 65 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:42,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 201 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:19:42,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-02 20:19:42,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 180. [2022-11-02 20:19:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 162 states have (on average 1.2592592592592593) internal successors, (204), 179 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2022-11-02 20:19:42,274 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 31 [2022-11-02 20:19:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:42,274 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2022-11-02 20:19:42,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2022-11-02 20:19:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 20:19:42,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:42,275 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:19:42,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:42,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:42,488 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:42,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash -822688907, now seen corresponding path program 1 times [2022-11-02 20:19:42,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:42,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565202089] [2022-11-02 20:19:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:42,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:42,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:42,489 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:42,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:19:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:42,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:19:42,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:42,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:19:43,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 33 treesize of output 21 [2022-11-02 20:19:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:51,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:19:53,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 52 treesize of output 48 [2022-11-02 20:19:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:56,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:19:56,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565202089] [2022-11-02 20:19:56,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565202089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:19:56,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:19:56,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-02 20:19:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939421889] [2022-11-02 20:19:56,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:19:56,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:19:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:19:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:19:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=138, Unknown=6, NotChecked=0, Total=182 [2022-11-02 20:19:56,309 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:19:56,750 INFO L93 Difference]: Finished difference Result 212 states and 238 transitions. [2022-11-02 20:19:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:19:56,751 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-02 20:19:56,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:19:56,752 INFO L225 Difference]: With dead ends: 212 [2022-11-02 20:19:56,752 INFO L226 Difference]: Without dead ends: 210 [2022-11-02 20:19:56,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=44, Invalid=160, Unknown=6, NotChecked=0, Total=210 [2022-11-02 20:19:56,753 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 6 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:19:56,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 289 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 100 Unchecked, 0.3s Time] [2022-11-02 20:19:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-02 20:19:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2022-11-02 20:19:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 190 states have (on average 1.231578947368421) internal successors, (234), 207 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 234 transitions. [2022-11-02 20:19:56,758 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 234 transitions. Word has length 32 [2022-11-02 20:19:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:19:56,758 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 234 transitions. [2022-11-02 20:19:56,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:19:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 234 transitions. [2022-11-02 20:19:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 20:19:56,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:19:56,759 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] [2022-11-02 20:19:56,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:19:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:19:56,970 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:19:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:19:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash -822688903, now seen corresponding path program 1 times [2022-11-02 20:19:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:19:56,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293868651] [2022-11-02 20:19:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:19:56,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:19:56,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:19:56,973 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:19:56,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:19:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:19:57,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 20:19:57,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:19:57,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:19:57,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-02 20:19:57,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:19:57,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-11-02 20:19:57,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:19:57,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:19:57,665 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:19:57,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-02 20:19:57,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:19:57,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:19:57,742 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:19:57,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2022-11-02 20:19:57,935 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:19:57,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2022-11-02 20:19:57,954 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:19:57,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 33 [2022-11-02 20:19:59,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:19:59,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:19:59,229 INFO L356 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2022-11-02 20:19:59,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 96 treesize of output 84 [2022-11-02 20:19:59,246 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 20:19:59,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 53 [2022-11-02 20:19:59,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-02 20:19:59,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-02 20:19:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:19:59,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:20:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:21,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:21,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293868651] [2022-11-02 20:20:21,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293868651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:20:21,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:20:21,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-11-02 20:20:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373376677] [2022-11-02 20:20:21,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:20:21,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-02 20:20:21,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-02 20:20:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=791, Unknown=3, NotChecked=0, Total=930 [2022-11-02 20:20:21,401 INFO L87 Difference]: Start difference. First operand 208 states and 234 transitions. Second operand has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:27,636 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2022-11-02 20:20:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:20:27,637 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-02 20:20:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:27,638 INFO L225 Difference]: With dead ends: 215 [2022-11-02 20:20:27,638 INFO L226 Difference]: Without dead ends: 198 [2022-11-02 20:20:27,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=286, Invalid=1517, Unknown=3, NotChecked=0, Total=1806 [2022-11-02 20:20:27,639 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:27,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 854 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 352 Invalid, 0 Unknown, 142 Unchecked, 2.0s Time] [2022-11-02 20:20:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-02 20:20:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 191. [2022-11-02 20:20:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 173 states have (on average 1.2485549132947977) internal successors, (216), 190 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 216 transitions. [2022-11-02 20:20:27,643 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 216 transitions. Word has length 32 [2022-11-02 20:20:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:27,643 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 216 transitions. [2022-11-02 20:20:27,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 216 transitions. [2022-11-02 20:20:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:20:27,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:27,644 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] [2022-11-02 20:20:27,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:27,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:27,857 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:20:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash 798159371, now seen corresponding path program 1 times [2022-11-02 20:20:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:27,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951303939] [2022-11-02 20:20:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:27,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:27,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:27,859 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:27,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:20:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:28,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:20:28,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:28,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:20:28,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 20:20:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:28,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:28,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:28,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951303939] [2022-11-02 20:20:28,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951303939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:28,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:28,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:20:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296161937] [2022-11-02 20:20:28,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:28,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:20:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:28,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:20:28,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:20:28,621 INFO L87 Difference]: Start difference. First operand 191 states and 216 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:28,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:28,982 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2022-11-02 20:20:28,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:20:28,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-02 20:20:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:28,984 INFO L225 Difference]: With dead ends: 282 [2022-11-02 20:20:28,985 INFO L226 Difference]: Without dead ends: 282 [2022-11-02 20:20:28,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:20:28,987 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 243 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:28,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 226 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 83 Invalid, 0 Unknown, 167 Unchecked, 0.3s Time] [2022-11-02 20:20:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-02 20:20:28,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 213. [2022-11-02 20:20:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 195 states have (on average 1.2974358974358975) internal successors, (253), 212 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 253 transitions. [2022-11-02 20:20:28,995 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 253 transitions. Word has length 33 [2022-11-02 20:20:28,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:28,995 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 253 transitions. [2022-11-02 20:20:28,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 253 transitions. [2022-11-02 20:20:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:20:28,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:28,996 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] [2022-11-02 20:20:29,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:29,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:29,210 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:20:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1557875661, now seen corresponding path program 1 times [2022-11-02 20:20:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:29,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301108175] [2022-11-02 20:20:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:29,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:29,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:29,211 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:29,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:20:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:29,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:20:29,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:29,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:29,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 [2022-11-02 20:20:29,698 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:20:29,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 [2022-11-02 20:20:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:29,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:29,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:29,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301108175] [2022-11-02 20:20:29,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301108175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:29,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:29,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:20:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912228778] [2022-11-02 20:20:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:29,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:20:29,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:29,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:20:29,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:20:29,790 INFO L87 Difference]: Start difference. First operand 213 states and 253 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:30,534 INFO L93 Difference]: Finished difference Result 237 states and 276 transitions. [2022-11-02 20:20:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:20:30,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-02 20:20:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:30,536 INFO L225 Difference]: With dead ends: 237 [2022-11-02 20:20:30,536 INFO L226 Difference]: Without dead ends: 237 [2022-11-02 20:20:30,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:20:30,537 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 35 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:30,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 282 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:20:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-02 20:20:30,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 209. [2022-11-02 20:20:30,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 192 states have (on average 1.28125) internal successors, (246), 208 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2022-11-02 20:20:30,542 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 35 [2022-11-02 20:20:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:30,543 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2022-11-02 20:20:30,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2022-11-02 20:20:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:20:30,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:30,544 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:30,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:30,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:30,758 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:20:30,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:30,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1995423857, now seen corresponding path program 1 times [2022-11-02 20:20:30,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:30,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024606481] [2022-11-02 20:20:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:30,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:30,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:30,760 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:30,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:20:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:30,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:20:30,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:31,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:20:31,470 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:20:31,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 20 treesize of output 23 [2022-11-02 20:20:31,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:31,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:31,767 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:20:31,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 23 [2022-11-02 20:20:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:31,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:31,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:31,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024606481] [2022-11-02 20:20:31,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024606481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:31,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:31,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:20:31,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676693710] [2022-11-02 20:20:31,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:31,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:20:31,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:31,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:20:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:20:31,829 INFO L87 Difference]: Start difference. First operand 209 states and 246 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:33,225 INFO L93 Difference]: Finished difference Result 244 states and 275 transitions. [2022-11-02 20:20:33,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:20:33,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:20:33,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:33,226 INFO L225 Difference]: With dead ends: 244 [2022-11-02 20:20:33,226 INFO L226 Difference]: Without dead ends: 244 [2022-11-02 20:20:33,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:20:33,227 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 163 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:33,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 424 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 238 Invalid, 0 Unknown, 62 Unchecked, 0.8s Time] [2022-11-02 20:20:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-02 20:20:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 209. [2022-11-02 20:20:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 192 states have (on average 1.2708333333333333) internal successors, (244), 208 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 244 transitions. [2022-11-02 20:20:33,232 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 244 transitions. Word has length 36 [2022-11-02 20:20:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:33,232 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 244 transitions. [2022-11-02 20:20:33,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 244 transitions. [2022-11-02 20:20:33,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:20:33,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:33,233 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] [2022-11-02 20:20:33,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:33,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:33,447 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:20:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1026976127, now seen corresponding path program 1 times [2022-11-02 20:20:33,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:33,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019918368] [2022-11-02 20:20:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:33,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:33,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:33,448 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:33,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:20:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:33,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:20:33,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:33,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:33,791 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:20:33,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 20:20:33,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:20:34,121 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-02 20:20:34,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 27 [2022-11-02 20:20:34,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:34,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 [2022-11-02 20:20:34,760 INFO L356 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2022-11-02 20:20:34,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 30 [2022-11-02 20:20:34,913 INFO L356 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-11-02 20:20:34,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 51 treesize of output 39 [2022-11-02 20:20:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:35,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:35,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:35,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019918368] [2022-11-02 20:20:35,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019918368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:35,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:35,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:20:35,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645898632] [2022-11-02 20:20:35,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:35,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:20:35,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:35,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:20:35,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:20:35,025 INFO L87 Difference]: Start difference. First operand 209 states and 244 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:36,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:36,656 INFO L93 Difference]: Finished difference Result 218 states and 250 transitions. [2022-11-02 20:20:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:20:36,658 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:20:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:36,659 INFO L225 Difference]: With dead ends: 218 [2022-11-02 20:20:36,659 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 20:20:36,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=329, Unknown=1, NotChecked=0, Total=420 [2022-11-02 20:20:36,660 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 72 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:36,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 416 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 258 Invalid, 0 Unknown, 173 Unchecked, 0.9s Time] [2022-11-02 20:20:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 20:20:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 212. [2022-11-02 20:20:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 195 states have (on average 1.2666666666666666) internal successors, (247), 211 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 247 transitions. [2022-11-02 20:20:36,664 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 247 transitions. Word has length 36 [2022-11-02 20:20:36,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:36,664 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 247 transitions. [2022-11-02 20:20:36,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:36,664 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 247 transitions. [2022-11-02 20:20:36,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:20:36,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:36,665 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] [2022-11-02 20:20:36,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:36,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:36,877 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:20:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:36,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1771489038, now seen corresponding path program 1 times [2022-11-02 20:20:36,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:36,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823785581] [2022-11-02 20:20:36,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:36,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:36,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:36,879 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:36,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:20:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:37,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:20:37,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:37,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:37,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:20:37,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:37,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 13 [2022-11-02 20:20:37,827 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:20:37,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 20 [2022-11-02 20:20:37,952 INFO L356 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-11-02 20:20:37,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2022-11-02 20:20:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:37,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:37,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823785581] [2022-11-02 20:20:37,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823785581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:37,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:37,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:20:37,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777701169] [2022-11-02 20:20:37,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:37,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:20:37,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:20:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:20:37,996 INFO L87 Difference]: Start difference. First operand 212 states and 247 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:39,510 INFO L93 Difference]: Finished difference Result 224 states and 254 transitions. [2022-11-02 20:20:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:20:39,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-02 20:20:39,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:39,512 INFO L225 Difference]: With dead ends: 224 [2022-11-02 20:20:39,513 INFO L226 Difference]: Without dead ends: 224 [2022-11-02 20:20:39,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:20:39,513 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 263 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:39,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 371 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 220 Invalid, 0 Unknown, 63 Unchecked, 0.8s Time] [2022-11-02 20:20:39,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-02 20:20:39,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2022-11-02 20:20:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 197 states have (on average 1.2690355329949239) internal successors, (250), 213 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2022-11-02 20:20:39,518 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 250 transitions. Word has length 37 [2022-11-02 20:20:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:39,519 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 250 transitions. [2022-11-02 20:20:39,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 250 transitions. [2022-11-02 20:20:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:20:39,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:39,520 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] [2022-11-02 20:20:39,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:39,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:39,743 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:20:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1825070928, now seen corresponding path program 1 times [2022-11-02 20:20:39,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:39,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415724640] [2022-11-02 20:20:39,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:39,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:39,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:39,745 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:39,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:20:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:39,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 20:20:39,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:39,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-02 20:20:40,019 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:20:40,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-02 20:20:40,214 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:20:40,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 20:20:40,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:20:40,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 19 [2022-11-02 20:20:40,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:20:40,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-11-02 20:20:41,525 INFO L356 Elim1Store]: treesize reduction 27, result has 34.1 percent of original size [2022-11-02 20:20:41,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 50 treesize of output 35 [2022-11-02 20:20:41,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:41,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:41,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:41,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:41,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415724640] [2022-11-02 20:20:41,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415724640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:41,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:41,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 20:20:41,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912485000] [2022-11-02 20:20:41,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:41,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:20:41,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:41,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:20:41,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:20:41,757 INFO L87 Difference]: Start difference. First operand 214 states and 250 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:43,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:43,940 INFO L93 Difference]: Finished difference Result 221 states and 253 transitions. [2022-11-02 20:20:43,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:20:43,941 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-02 20:20:43,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:43,942 INFO L225 Difference]: With dead ends: 221 [2022-11-02 20:20:43,942 INFO L226 Difference]: Without dead ends: 221 [2022-11-02 20:20:43,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:20:43,943 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 122 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:43,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 337 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 189 Invalid, 0 Unknown, 187 Unchecked, 0.7s Time] [2022-11-02 20:20:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-02 20:20:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2022-11-02 20:20:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 197 states have (on average 1.263959390862944) internal successors, (249), 213 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 249 transitions. [2022-11-02 20:20:43,948 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 249 transitions. Word has length 37 [2022-11-02 20:20:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:43,948 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 249 transitions. [2022-11-02 20:20:43,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 249 transitions. [2022-11-02 20:20:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:20:43,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:43,949 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:43,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-02 20:20:44,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:44,166 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-02 20:20:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash -220546803, now seen corresponding path program 3 times [2022-11-02 20:20:44,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:44,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852298880] [2022-11-02 20:20:44,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:20:44,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:44,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:44,169 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:44,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094e46b8-bfa6-4d31-92ff-49c3af2758f3/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:20:45,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:20:45,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:20:45,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 20:20:45,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:45,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:45,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:45,166 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:20:45,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:45,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:20:45,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:20:45,474 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:20:45,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 45 [2022-11-02 20:20:45,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-11-02 20:20:45,768 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:20:45,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 68 treesize of output 65 [2022-11-02 20:20:45,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 68 treesize of output 64 [2022-11-02 20:20:46,069 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:20:46,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 68 treesize of output 65 [2022-11-02 20:20:46,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 68 treesize of output 64 [2022-11-02 20:20:46,360 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:20:46,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 45 [2022-11-02 20:20:46,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 24 [2022-11-02 20:20:46,700 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:20:46,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 68 treesize of output 65 [2022-11-02 20:20:46,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 44 [2022-11-02 20:20:46,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 13 [2022-11-02 20:20:46,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:20:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:47,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:20:48,486 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (or (not (bvule (bvadd (_ bv4 32) .cse0 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| .cse2))) (and (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0 .cse3) (bvadd (_ bv8 32) .cse0 .cse3)))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) .cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))))) (not (bvslt |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv20 32)))))) is different from false [2022-11-02 20:20:48,599 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (or (not (bvslt (bvadd |c_ULTIMATE.start_create_data_~counter~0#1| (_ bv1 32)) (_ bv20 32))) (not (bvule (bvadd (_ bv8 32) .cse0 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)) (select |c_#length| .cse2))) (and (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd .cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1)))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0 .cse3) (bvadd .cse0 .cse3 (_ bv12 32))))))))) is different from false [2022-11-02 20:20:53,908 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse14 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)) (.cse0 (bvadd (_ bv4 32) .cse2 .cse14))) (or (not (bvule .cse0 (select |c_#length| .cse1))) (not (bvslt (bvadd (_ bv2 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))) (and (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1406))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse6 (store .cse8 .cse7 v_ArrVal_1409))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1407) .cse7 v_ArrVal_1408)) (.cse4 (select (select .cse6 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv16 32) .cse2 (select (select (store .cse3 .cse4 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)))) (not (bvule (bvadd (select (select .cse3 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) .cse2 (_ bv12 32)) (select |c_#length| .cse4))))))))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1406))) (let ((.cse13 (select (select .cse12 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse10 (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1407) .cse13 v_ArrVal_1408)) (.cse11 (select (select (store .cse12 .cse13 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (select (store .cse10 .cse11 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (bvule (bvadd .cse2 .cse9 (_ bv12 32)) (bvadd (_ bv16 32) .cse2 .cse9)))) (not (bvule (bvadd (select (select .cse10 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) .cse2 (_ bv12 32)) (select |c_#length| .cse11))))))))) (not (bvule (bvadd .cse2 .cse14) .cse0)))))) is different from false [2022-11-02 20:20:54,256 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse14 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3)) (.cse13 (bvadd (_ bv8 32) .cse0 .cse14))) (or (and (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_1406))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (let ((.cse4 (store .cse7 .cse6 v_ArrVal_1409))) (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_1407) .cse6 v_ArrVal_1408)) (.cse2 (select (select .cse4 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd .cse0 (select (select (store .cse1 .cse2 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3)))) (not (bvule (bvadd (select (select .cse1 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) (_ bv16 32) .cse0) (select |c_#length| .cse2))))))))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.base| .cse5 v_ArrVal_1406))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (let ((.cse9 (store (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_1407) .cse12 v_ArrVal_1408)) (.cse10 (select (select (store .cse11 .cse12 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (select (select (store .cse9 .cse10 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3))) (bvule (bvadd (_ bv16 32) .cse0 .cse8) (bvadd .cse0 .cse8 (_ bv20 32))))) (not (bvule (bvadd (select (select .cse9 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse3) (_ bv16 32) .cse0) (select |c_#length| .cse10))))))))) (not (bvule .cse13 (select |c_#length| .cse5))) (not (bvslt (bvadd (_ bv3 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))) (not (bvule (bvadd (_ bv4 32) .cse0 .cse14) .cse13)))))) is different from false [2022-11-02 20:20:55,156 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|))) (let ((.cse1 (bvadd (_ bv4 32) .cse0 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|))) (or (not (bvule (bvadd .cse0 |c_ULTIMATE.start_create_data_#t~mem8#1.offset|) .cse1)) (not (bvule .cse1 (select |c_#length| |c_ULTIMATE.start_create_data_#t~mem8#1.base|))) (not (bvslt (bvadd (_ bv3 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))) (let ((.cse7 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (and (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1404))) (let ((.cse2 (select (select .cse9 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (let ((.cse3 (bvadd (_ bv8 32) .cse0 .cse2))) (or (not (bvule (bvadd (_ bv4 32) .cse0 .cse2) .cse3)) (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1405))) (let ((.cse4 (select (select .cse12 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (or (not (bvule .cse3 (select |c_#length| .cse4))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store .cse12 .cse4 v_ArrVal_1406))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (let ((.cse8 (store .cse11 .cse10 v_ArrVal_1409))) (let ((.cse5 (store (store .cse9 .cse4 v_ArrVal_1407) .cse10 v_ArrVal_1408)) (.cse6 (select (select .cse8 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store .cse5 .cse6 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7) .cse0 (_ bv20 32)) (select |c_#length| (select (select (store .cse8 .cse6 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7)))) (not (bvule (bvadd (_ bv16 32) (select (select .cse5 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7) .cse0) (select |c_#length| .cse6)))))))))))))))))) (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse21 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1404))) (let ((.cse13 (select (select .cse21 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (let ((.cse14 (bvadd (_ bv8 32) .cse0 .cse13))) (or (not (bvule (bvadd (_ bv4 32) .cse0 .cse13) .cse14)) (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse22 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_#t~mem8#1.base| v_ArrVal_1405))) (let ((.cse15 (select (select .cse22 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (or (not (bvule .cse14 (select |c_#length| .cse15))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse19 (store .cse22 .cse15 v_ArrVal_1406))) (let ((.cse20 (select (select .cse19 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (let ((.cse16 (store (store .cse21 .cse15 v_ArrVal_1407) .cse20 v_ArrVal_1408)) (.cse17 (select (select (store .cse19 .cse20 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (or (not (bvule (bvadd (_ bv16 32) (select (select .cse16 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7) .cse0) (select |c_#length| .cse17))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse18 (select (select (store .cse16 .cse17 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse7))) (bvule (bvadd (_ bv16 32) .cse18 .cse0) (bvadd .cse18 .cse0 (_ bv20 32)))))))))))))))))))))))) is different from false [2022-11-02 20:20:55,604 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse6 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse24 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)) (.cse0 (bvadd (_ bv4 32) .cse6 .cse24))) (or (not (bvule .cse0 (select |c_#length| .cse1))) (and (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1404))) (let ((.cse13 (select (select .cse11 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse2 (bvadd .cse13 (_ bv8 32) .cse6))) (or (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1405))) (let ((.cse3 (select (select .cse12 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (not (bvule .cse2 (select |c_#length| .cse3))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (store .cse12 .cse3 v_ArrVal_1406))) (let ((.cse10 (select (select .cse9 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse4 (store (store .cse11 .cse3 v_ArrVal_1407) .cse10 v_ArrVal_1408)) (.cse7 (select (select (store .cse9 .cse10 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (not (bvule (bvadd (_ bv16 32) (select (select .cse4 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) .cse6) (select |c_#length| .cse7))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (select (select (store .cse4 .cse7 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (bvule (bvadd (_ bv16 32) .cse8 .cse6) (bvadd .cse8 .cse6 (_ bv20 32)))))))))))))) (not (bvule (bvadd .cse13 (_ bv4 32) .cse6) .cse2))))))) (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse19 (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1404))) (let ((.cse23 (select (select .cse19 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse14 (bvadd .cse23 (_ bv8 32) .cse6))) (or (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse22 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1405))) (let ((.cse15 (select (select .cse22 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (not (bvule .cse14 (select |c_#length| .cse15))) (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse21 (store .cse22 .cse15 v_ArrVal_1406))) (let ((.cse20 (select (select .cse21 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (let ((.cse18 (store .cse21 .cse20 v_ArrVal_1409))) (let ((.cse16 (store (store .cse19 .cse15 v_ArrVal_1407) .cse20 v_ArrVal_1408)) (.cse17 (select (select .cse18 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5))) (or (not (bvule (bvadd (_ bv16 32) (select (select .cse16 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) .cse6) (select |c_#length| .cse17))) (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store .cse16 .cse17 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5) .cse6 (_ bv20 32)) (select |c_#length| (select (select (store .cse18 .cse17 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse5)))))))))))))) (not (bvule (bvadd .cse23 (_ bv4 32) .cse6) .cse14)))))))) (not (bvule (bvadd .cse6 .cse24) .cse0)) (not (bvslt (bvadd (_ bv3 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))))))) is different from false [2022-11-02 20:20:56,466 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse9 (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~data~0#1.offset|))) (let ((.cse2 (bvmul (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (let ((.cse0 (bvadd (_ bv8 32) .cse2 .cse3)) (.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (or (not (bvslt (bvadd (_ bv4 32) |c_ULTIMATE.start_create_data_~counter~0#1|) (_ bv20 32))) (not (bvule .cse0 (select |c_#length| .cse1))) (not (bvule (bvadd (_ bv4 32) .cse2 .cse3) .cse0)) (and (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1404))) (let ((.cse4 (select (select .cse12 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (let ((.cse5 (bvadd .cse4 .cse2 (_ bv12 32)))) (or (not (bvule (bvadd .cse4 (_ bv8 32) .cse2) .cse5)) (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse14 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1405))) (let ((.cse13 (select (select .cse14 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (or (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (store .cse14 .cse13 v_ArrVal_1406))) (let ((.cse11 (select (select .cse10 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (let ((.cse7 (store (store .cse12 .cse13 v_ArrVal_1407) .cse11 v_ArrVal_1408)) (.cse8 (select (select (store .cse10 .cse11 v_ArrVal_1409) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (store .cse7 .cse8 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (bvule (bvadd .cse6 .cse2 (_ bv20 32)) (bvadd .cse6 .cse2 (_ bv24 32))))) (not (bvule (bvadd (select (select .cse7 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9) .cse2 (_ bv20 32)) (select |c_#length| .cse8)))))))) (not (bvule .cse5 (select |c_#length| .cse13)))))))))))) (forall ((v_ArrVal_1404 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse20 (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1404))) (let ((.cse15 (select (select .cse20 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (let ((.cse16 (bvadd .cse15 .cse2 (_ bv12 32)))) (or (not (bvule (bvadd .cse15 (_ bv8 32) .cse2) .cse16)) (forall ((v_ArrVal_1405 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse24 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1405))) (let ((.cse21 (select (select .cse24 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (or (forall ((v_ArrVal_1409 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1407 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1406 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse23 (store .cse24 .cse21 v_ArrVal_1406))) (let ((.cse22 (select (select .cse23 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (let ((.cse19 (store .cse23 .cse22 v_ArrVal_1409))) (let ((.cse17 (store (store .cse20 .cse21 v_ArrVal_1407) .cse22 v_ArrVal_1408)) (.cse18 (select (select .cse19 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9))) (or (forall ((v_ArrVal_1410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1411 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store .cse17 .cse18 v_ArrVal_1410) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9) .cse2 (_ bv24 32)) (select |c_#length| (select (select (store .cse19 .cse18 v_ArrVal_1411) |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9)))) (not (bvule (bvadd (select (select .cse17 |c_ULTIMATE.start_create_data_~data~0#1.base|) .cse9) .cse2 (_ bv20 32)) (select |c_#length| .cse18))))))))) (not (bvule .cse16 (select |c_#length| .cse21))))))))))))))))) is different from false [2022-11-02 20:21:42,419 WARN L234 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:21:42,614 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:21:42,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1332 treesize of output 1252 [2022-11-02 20:21:42,760 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:21:42,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1216 treesize of output 716 [2022-11-02 20:21:43,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 108807804 treesize of output 99576456