./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/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_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- 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 21:07:37,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:37,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:37,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:37,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:37,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:37,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:37,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:37,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:37,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:37,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:37,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:37,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:37,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:37,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:37,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:37,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:37,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:37,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:37,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:37,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:37,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:37,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:37,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:37,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:37,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:37,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:37,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:37,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:37,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:37,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:37,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:37,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:37,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:37,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:37,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:37,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:37,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:37,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:37,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:37,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:37,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-02 21:07:37,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:37,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:37,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:37,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:37,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:37,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:37,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:37,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:37,186 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:37,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:37,187 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:07:37,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:37,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:37,188 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 21:07:37,188 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 21:07:37,189 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 21:07:37,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:37,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:07:37,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:37,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:37,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:37,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:37,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:37,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:37,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:37,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:07:37,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:07:37,191 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_3aacfee3-75f4-49c9-b21b-918e52417d11/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2022-11-02 21:07:37,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:37,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:37,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:37,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:37,577 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:37,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-02 21:07:37,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data/9c3566e70/aea4ddb121f84cc3af6462003cc62613/FLAG3cb32b593 [2022-11-02 21:07:38,489 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:38,491 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-02 21:07:38,511 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data/9c3566e70/aea4ddb121f84cc3af6462003cc62613/FLAG3cb32b593 [2022-11-02 21:07:38,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data/9c3566e70/aea4ddb121f84cc3af6462003cc62613 [2022-11-02 21:07:38,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:38,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:38,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:38,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:38,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:38,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:38" (1/1) ... [2022-11-02 21:07:38,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15731d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:38, skipping insertion in model container [2022-11-02 21:07:38,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:38" (1/1) ... [2022-11-02 21:07:38,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:38,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:39,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-02 21:07:39,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:39,561 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 21:07:39,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28b4cdbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:39, skipping insertion in model container [2022-11-02 21:07:39,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:39,562 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 21:07:39,564 INFO L158 Benchmark]: Toolchain (without parser) took 909.07ms. Allocated memory is still 113.2MB. Free memory was 69.3MB in the beginning and 78.4MB in the end (delta: -9.1MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2022-11-02 21:07:39,564 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 113.2MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:07:39,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 904.14ms. Allocated memory is still 113.2MB. Free memory was 69.1MB in the beginning and 78.4MB in the end (delta: -9.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2022-11-02 21:07:39,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 113.2MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 904.14ms. Allocated memory is still 113.2MB. Free memory was 69.1MB in the beginning and 78.4MB in the end (delta: -9.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/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_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- 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 21:07:41,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:41,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:41,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:41,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:41,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:41,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:41,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:41,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:41,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:41,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:41,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:41,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:41,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:41,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:41,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:41,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:41,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:41,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:42,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:42,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:42,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:42,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:42,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:42,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:42,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:42,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:42,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:42,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:42,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:42,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:42,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:42,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:42,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:42,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:42,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:42,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:42,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:42,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:42,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:42,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:42,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2022-11-02 21:07:42,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:42,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:42,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:42,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:42,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:42,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:42,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:42,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:42,081 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:42,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:42,083 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:07:42,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:42,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:42,083 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 21:07:42,084 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 21:07:42,084 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 21:07:42,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:42,084 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:07:42,084 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:07:42,085 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:07:42,085 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:42,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:42,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:42,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:42,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:42,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:42,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:42,087 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:07:42,087 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:07:42,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:07:42,087 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_3aacfee3-75f4-49c9-b21b-918e52417d11/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2022-11-02 21:07:42,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:42,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:42,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:42,537 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:42,540 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:42,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-02 21:07:42,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data/da4501029/2af904396c6e4bb395dee1ff2d201509/FLAGa941b1fd9 [2022-11-02 21:07:43,399 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:43,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-02 21:07:43,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data/da4501029/2af904396c6e4bb395dee1ff2d201509/FLAGa941b1fd9 [2022-11-02 21:07:43,589 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/data/da4501029/2af904396c6e4bb395dee1ff2d201509 [2022-11-02 21:07:43,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:43,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:43,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:43,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:43,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:43,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:43" (1/1) ... [2022-11-02 21:07:43,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749c5ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:43, skipping insertion in model container [2022-11-02 21:07:43,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:43" (1/1) ... [2022-11-02 21:07:43,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:43,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:44,410 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-02 21:07:44,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:44,497 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 21:07:44,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:44,583 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-02 21:07:44,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:44,637 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:44,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-02 21:07:44,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:44,934 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:44,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44 WrapperNode [2022-11-02 21:07:44,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:44,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:44,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:44,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:44,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:44,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,020 INFO L138 Inliner]: procedures = 352, calls = 112, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 383 [2022-11-02 21:07:45,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:45,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:45,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:45,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:45,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:45,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:45,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:45,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:45,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (1/1) ... [2022-11-02 21:07:45,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:45,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:45,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:45,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 21:07:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 21:07:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 21:07:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 21:07:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 21:07:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-02 21:07:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:07:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 21:07:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:07:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-11-02 21:07:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:07:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 21:07:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:45,709 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:45,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:47,553 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:47,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:47,563 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-02 21:07:47,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:47 BoogieIcfgContainer [2022-11-02 21:07:47,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:47,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:47,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:47,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:47,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:43" (1/3) ... [2022-11-02 21:07:47,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406da7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:47, skipping insertion in model container [2022-11-02 21:07:47,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:44" (2/3) ... [2022-11-02 21:07:47,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406da7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:47, skipping insertion in model container [2022-11-02 21:07:47,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:47" (3/3) ... [2022-11-02 21:07:47,593 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-1.i [2022-11-02 21:07:47,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:47,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2022-11-02 21:07:47,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:47,708 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;@354185c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:47,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2022-11-02 21:07:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 243 states, 147 states have (on average 1.9319727891156462) internal successors, (284), 239 states have internal predecessors, (284), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:07:47,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 21:07:47,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:47,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 21:07:47,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:07:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-02 21:07:47,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:47,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636850415] [2022-11-02 21:07:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:47,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:47,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:47,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:47,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:07:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:48,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:07:48,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:48,092 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 21:07:48,111 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 21:07:48,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:48,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:48,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636850415] [2022-11-02 21:07:48,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636850415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:48,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:48,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:07:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121677582] [2022-11-02 21:07:48,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:48,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:48,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:48,179 INFO L87 Difference]: Start difference. First operand has 243 states, 147 states have (on average 1.9319727891156462) internal successors, (284), 239 states have internal predecessors, (284), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:48,884 INFO L93 Difference]: Finished difference Result 251 states and 285 transitions. [2022-11-02 21:07:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 21:07:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:48,902 INFO L225 Difference]: With dead ends: 251 [2022-11-02 21:07:48,906 INFO L226 Difference]: Without dead ends: 249 [2022-11-02 21:07:48,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:48,916 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 239 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:48,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 207 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:07:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-02 21:07:49,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 233. [2022-11-02 21:07:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 142 states have (on average 1.8450704225352113) internal successors, (262), 229 states have internal predecessors, (262), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:07:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2022-11-02 21:07:49,016 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 3 [2022-11-02 21:07:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:49,017 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2022-11-02 21:07:49,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2022-11-02 21:07:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 21:07:49,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:49,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 21:07:49,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:49,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:49,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:07:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-02 21:07:49,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:49,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941185320] [2022-11-02 21:07:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:49,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:49,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:49,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:49,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:07:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:49,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:07:49,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:49,421 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 21:07:49,436 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 21:07:49,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:49,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:49,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941185320] [2022-11-02 21:07:49,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941185320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:49,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:49,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:07:49,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191392237] [2022-11-02 21:07:49,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:49,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:49,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:49,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:49,441 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:50,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:50,306 INFO L93 Difference]: Finished difference Result 232 states and 265 transitions. [2022-11-02 21:07:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:50,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 21:07:50,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:50,310 INFO L225 Difference]: With dead ends: 232 [2022-11-02 21:07:50,310 INFO L226 Difference]: Without dead ends: 232 [2022-11-02 21:07:50,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:50,311 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 9 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:50,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 432 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:07:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-02 21:07:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-11-02 21:07:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 142 states have (on average 1.8380281690140845) internal successors, (261), 228 states have internal predecessors, (261), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:07:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 265 transitions. [2022-11-02 21:07:50,339 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 265 transitions. Word has length 3 [2022-11-02 21:07:50,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:50,340 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 265 transitions. [2022-11-02 21:07:50,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:50,340 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 265 transitions. [2022-11-02 21:07:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:07:50,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:50,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 21:07:50,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:50,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:50,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:07:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2022-11-02 21:07:50,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:50,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918434703] [2022-11-02 21:07:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:50,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:50,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:50,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:07:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:50,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:07:50,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:50,708 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 21:07:50,793 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 21:07:50,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:50,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:50,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918434703] [2022-11-02 21:07:50,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918434703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:50,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:50,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:50,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779893139] [2022-11-02 21:07:50,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:50,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:50,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:50,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:50,802 INFO L87 Difference]: Start difference. First operand 232 states and 265 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:51,665 INFO L93 Difference]: Finished difference Result 236 states and 269 transitions. [2022-11-02 21:07:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:07:51,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 21:07:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:51,668 INFO L225 Difference]: With dead ends: 236 [2022-11-02 21:07:51,668 INFO L226 Difference]: Without dead ends: 236 [2022-11-02 21:07:51,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 21:07:51,670 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 13 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:51,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 431 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:07:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-02 21:07:51,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2022-11-02 21:07:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 144 states have (on average 1.8263888888888888) internal successors, (263), 230 states have internal predecessors, (263), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:07:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 267 transitions. [2022-11-02 21:07:51,682 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 267 transitions. Word has length 6 [2022-11-02 21:07:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:51,683 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 267 transitions. [2022-11-02 21:07:51,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 267 transitions. [2022-11-02 21:07:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 21:07:51,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:51,684 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:51,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:51,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:51,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:07:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:51,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1261842348, now seen corresponding path program 1 times [2022-11-02 21:07:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:51,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552578054] [2022-11-02 21:07:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:51,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:51,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:51,904 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:51,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:07:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:52,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:52,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:52,140 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 21:07:52,306 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 21:07:52,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:53,693 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 21:07:53,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:53,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552578054] [2022-11-02 21:07:53,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552578054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:53,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:53,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-02 21:07:53,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355014248] [2022-11-02 21:07:53,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:07:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:07:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:53,696 INFO L87 Difference]: Start difference. First operand 234 states and 267 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:58,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:58,831 INFO L93 Difference]: Finished difference Result 240 states and 273 transitions. [2022-11-02 21:07:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:58,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 21:07:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:58,834 INFO L225 Difference]: With dead ends: 240 [2022-11-02 21:07:58,834 INFO L226 Difference]: Without dead ends: 240 [2022-11-02 21:07:58,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:58,836 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 19 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:58,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1120 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 21:07:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-02 21:07:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-02 21:07:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 151 states have (on average 1.781456953642384) internal successors, (269), 236 states have internal predecessors, (269), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:07:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 273 transitions. [2022-11-02 21:07:58,847 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 273 transitions. Word has length 10 [2022-11-02 21:07:58,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:58,848 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 273 transitions. [2022-11-02 21:07:58,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 273 transitions. [2022-11-02 21:07:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:07:58,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:58,849 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:58,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-02 21:07:59,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:59,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:07:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:59,069 INFO L85 PathProgramCache]: Analyzing trace with hash -955562967, now seen corresponding path program 1 times [2022-11-02 21:07:59,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:59,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189630712] [2022-11-02 21:07:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:59,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:59,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:59,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:59,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:07:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:59,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:07:59,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:59,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:59,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:59,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189630712] [2022-11-02 21:07:59,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189630712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:59,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:59,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 21:07:59,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227242971] [2022-11-02 21:07:59,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:59,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:59,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:59,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:59,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:59,467 INFO L87 Difference]: Start difference. First operand 240 states and 273 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:59,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:59,780 INFO L93 Difference]: Finished difference Result 260 states and 293 transitions. [2022-11-02 21:07:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:07:59,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-02 21:07:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:59,782 INFO L225 Difference]: With dead ends: 260 [2022-11-02 21:07:59,783 INFO L226 Difference]: Without dead ends: 260 [2022-11-02 21:07:59,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 21:07:59,784 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 24 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:59,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1564 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:07:59,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-02 21:07:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2022-11-02 21:07:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 171 states have (on average 1.6900584795321638) internal successors, (289), 256 states have internal predecessors, (289), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:07:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 293 transitions. [2022-11-02 21:07:59,794 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 293 transitions. Word has length 25 [2022-11-02 21:07:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:59,795 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 293 transitions. [2022-11-02 21:07:59,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:59,795 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 293 transitions. [2022-11-02 21:07:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 21:07:59,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:59,813 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:59,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:00,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:00,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash -167681350, now seen corresponding path program 2 times [2022-11-02 21:08:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:00,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417870462] [2022-11-02 21:08:00,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:08:00,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:00,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:00,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:00,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:08:00,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:08:00,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:00,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:08:00,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:00,271 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 21:08:00,271 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-02 21:08:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-02 21:08:00,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:00,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:00,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417870462] [2022-11-02 21:08:00,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417870462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:00,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:00,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:08:00,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856158391] [2022-11-02 21:08:00,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:00,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:08:00,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:00,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:08:00,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:08:00,319 INFO L87 Difference]: Start difference. First operand 260 states and 293 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:00,893 INFO L93 Difference]: Finished difference Result 271 states and 305 transitions. [2022-11-02 21:08:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:08:00,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-11-02 21:08:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:00,895 INFO L225 Difference]: With dead ends: 271 [2022-11-02 21:08:00,896 INFO L226 Difference]: Without dead ends: 271 [2022-11-02 21:08:00,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 21:08:00,897 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 224 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:00,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 210 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:08:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-02 21:08:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 255. [2022-11-02 21:08:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 171 states have (on average 1.6608187134502923) internal successors, (284), 251 states have internal predecessors, (284), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 288 transitions. [2022-11-02 21:08:00,906 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 288 transitions. Word has length 45 [2022-11-02 21:08:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:00,907 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 288 transitions. [2022-11-02 21:08:00,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 288 transitions. [2022-11-02 21:08:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 21:08:00,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:00,909 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:00,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:01,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:01,125 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:01,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:01,125 INFO L85 PathProgramCache]: Analyzing trace with hash -167681349, now seen corresponding path program 1 times [2022-11-02 21:08:01,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:01,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582478712] [2022-11-02 21:08:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:01,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:01,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:01,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:01,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:08:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:01,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:08:01,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:01,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:01,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:01,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582478712] [2022-11-02 21:08:01,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582478712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:01,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:01,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 21:08:01,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094103718] [2022-11-02 21:08:01,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:01,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:08:01,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:01,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:08:01,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:08:01,910 INFO L87 Difference]: Start difference. First operand 255 states and 288 transitions. Second operand has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:08:02,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:02,578 INFO L93 Difference]: Finished difference Result 263 states and 296 transitions. [2022-11-02 21:08:02,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:08:02,579 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-11-02 21:08:02,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:02,580 INFO L225 Difference]: With dead ends: 263 [2022-11-02 21:08:02,581 INFO L226 Difference]: Without dead ends: 263 [2022-11-02 21:08:02,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:08:02,582 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 33 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:02,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2862 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:08:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-02 21:08:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-11-02 21:08:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 179 states have (on average 1.6312849162011174) internal successors, (292), 259 states have internal predecessors, (292), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2022-11-02 21:08:02,590 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 45 [2022-11-02 21:08:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:02,591 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2022-11-02 21:08:02,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:08:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2022-11-02 21:08:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-02 21:08:02,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:02,593 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:02,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:02,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:02,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1953485173, now seen corresponding path program 2 times [2022-11-02 21:08:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:02,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855090158] [2022-11-02 21:08:02,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:08:02,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:02,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:02,810 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:02,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:08:03,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:08:03,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:08:03,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:08:03,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:03,195 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-02 21:08:03,195 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 1 case distinctions, treesize of input 19 treesize of output 21 [2022-11-02 21:08:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:03,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:03,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:03,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855090158] [2022-11-02 21:08:03,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855090158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:03,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:03,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:08:03,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960431163] [2022-11-02 21:08:03,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:03,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:03,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:03,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:03,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:03,349 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:05,564 INFO L93 Difference]: Finished difference Result 445 states and 509 transitions. [2022-11-02 21:08:05,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:08:05,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-11-02 21:08:05,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:05,568 INFO L225 Difference]: With dead ends: 445 [2022-11-02 21:08:05,568 INFO L226 Difference]: Without dead ends: 445 [2022-11-02 21:08:05,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:05,569 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 667 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:05,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 721 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:08:05,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-11-02 21:08:05,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 369. [2022-11-02 21:08:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 285 states have (on average 1.7228070175438597) internal successors, (491), 364 states have internal predecessors, (491), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:08:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 497 transitions. [2022-11-02 21:08:05,581 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 497 transitions. Word has length 53 [2022-11-02 21:08:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:05,581 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 497 transitions. [2022-11-02 21:08:05,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 497 transitions. [2022-11-02 21:08:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 21:08:05,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:05,583 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:05,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:05,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:05,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -530101490, now seen corresponding path program 1 times [2022-11-02 21:08:05,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:05,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497846780] [2022-11-02 21:08:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:05,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:05,800 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:05,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:08:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:06,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:08:06,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:06,390 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-02 21:08:06,391 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 1 case distinctions, treesize of input 19 treesize of output 21 [2022-11-02 21:08:06,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:08:06,896 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 21:08:06,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2022-11-02 21:08:06,935 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:08:06,935 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 21:08:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:07,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:07,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:07,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497846780] [2022-11-02 21:08:07,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497846780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:07,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:07,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:08:07,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941250235] [2022-11-02 21:08:07,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:07,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:08:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:08:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:07,130 INFO L87 Difference]: Start difference. First operand 369 states and 497 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:07,300 INFO L93 Difference]: Finished difference Result 370 states and 498 transitions. [2022-11-02 21:08:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:07,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-11-02 21:08:07,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:07,306 INFO L225 Difference]: With dead ends: 370 [2022-11-02 21:08:07,306 INFO L226 Difference]: Without dead ends: 370 [2022-11-02 21:08:07,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:07,311 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 5 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:07,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1278 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 220 Unchecked, 0.1s Time] [2022-11-02 21:08:07,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-02 21:08:07,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-11-02 21:08:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 286 states have (on average 1.7202797202797202) internal successors, (492), 365 states have internal predecessors, (492), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:08:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 498 transitions. [2022-11-02 21:08:07,330 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 498 transitions. Word has length 56 [2022-11-02 21:08:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:07,331 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 498 transitions. [2022-11-02 21:08:07,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 498 transitions. [2022-11-02 21:08:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 21:08:07,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:07,334 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:07,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:07,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:07,554 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash 746722395, now seen corresponding path program 1 times [2022-11-02 21:08:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:07,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343032339] [2022-11-02 21:08:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:07,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:07,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:07,557 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:07,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:08:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:07,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:08:07,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:07,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:07,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:07,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343032339] [2022-11-02 21:08:07,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343032339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:07,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:07,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:08:07,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309456891] [2022-11-02 21:08:07,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:07,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:07,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:07,945 INFO L87 Difference]: Start difference. First operand 370 states and 498 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:08,649 INFO L93 Difference]: Finished difference Result 387 states and 518 transitions. [2022-11-02 21:08:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:08:08,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-02 21:08:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:08,651 INFO L225 Difference]: With dead ends: 387 [2022-11-02 21:08:08,651 INFO L226 Difference]: Without dead ends: 387 [2022-11-02 21:08:08,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 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 21:08:08,652 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 394 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:08,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 244 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:08:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-02 21:08:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 363. [2022-11-02 21:08:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 286 states have (on average 1.6713286713286712) internal successors, (478), 358 states have internal predecessors, (478), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:08:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 484 transitions. [2022-11-02 21:08:08,663 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 484 transitions. Word has length 57 [2022-11-02 21:08:08,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:08,663 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 484 transitions. [2022-11-02 21:08:08,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 484 transitions. [2022-11-02 21:08:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 21:08:08,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:08,665 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:08,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:08,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:08,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash 746722396, now seen corresponding path program 1 times [2022-11-02 21:08:08,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:08,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576963955] [2022-11-02 21:08:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:08,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:08,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:08,886 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:08,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:08:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:08:09,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:09,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:09,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:09,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576963955] [2022-11-02 21:08:09,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576963955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:09,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:09,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:09,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972502810] [2022-11-02 21:08:09,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:09,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:09,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:09,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:09,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:09,426 INFO L87 Difference]: Start difference. First operand 363 states and 484 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:09,827 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2022-11-02 21:08:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:08:09,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-02 21:08:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:09,830 INFO L225 Difference]: With dead ends: 279 [2022-11-02 21:08:09,830 INFO L226 Difference]: Without dead ends: 279 [2022-11-02 21:08:09,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:09,831 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 258 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:09,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 922 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-02 21:08:09,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 257. [2022-11-02 21:08:09,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 181 states have (on average 1.580110497237569) internal successors, (286), 253 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 290 transitions. [2022-11-02 21:08:09,838 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 290 transitions. Word has length 57 [2022-11-02 21:08:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:09,839 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 290 transitions. [2022-11-02 21:08:09,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 290 transitions. [2022-11-02 21:08:09,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 21:08:09,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:09,840 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:09,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:10,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:10,056 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:10,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1673575759, now seen corresponding path program 1 times [2022-11-02 21:08:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:10,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050877520] [2022-11-02 21:08:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:10,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:10,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:10,058 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:10,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:08:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:10,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:08:10,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:10,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:10,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:10,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050877520] [2022-11-02 21:08:10,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050877520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:10,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:10,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:08:10,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312928504] [2022-11-02 21:08:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:10,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:10,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:10,484 INFO L87 Difference]: Start difference. First operand 257 states and 290 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:11,694 INFO L93 Difference]: Finished difference Result 275 states and 309 transitions. [2022-11-02 21:08:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:11,696 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-11-02 21:08:11,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:11,697 INFO L225 Difference]: With dead ends: 275 [2022-11-02 21:08:11,697 INFO L226 Difference]: Without dead ends: 275 [2022-11-02 21:08:11,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:11,698 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 254 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:11,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 624 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:08:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-02 21:08:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 268. [2022-11-02 21:08:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 193 states have (on average 1.5751295336787565) internal successors, (304), 264 states have internal predecessors, (304), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 308 transitions. [2022-11-02 21:08:11,706 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 308 transitions. Word has length 58 [2022-11-02 21:08:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:11,706 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 308 transitions. [2022-11-02 21:08:11,706 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 308 transitions. [2022-11-02 21:08:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 21:08:11,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:11,707 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:11,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:11,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:11,924 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:11,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:11,924 INFO L85 PathProgramCache]: Analyzing trace with hash 341240963, now seen corresponding path program 1 times [2022-11-02 21:08:11,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:11,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242285943] [2022-11-02 21:08:11,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:11,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:11,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:11,926 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:11,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:08:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:08:12,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:12,574 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-02 21:08:12,574 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 21:08:12,620 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 21:08:12,621 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-02 21:08:12,945 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 21:08:12,946 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 17 treesize of output 23 [2022-11-02 21:08:12,990 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:08:12,991 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 21:08:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:13,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:13,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:13,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242285943] [2022-11-02 21:08:13,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242285943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:13,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:13,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:08:13,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273160689] [2022-11-02 21:08:13,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:13,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:08:13,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:13,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:08:13,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:13,301 INFO L87 Difference]: Start difference. First operand 268 states and 308 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:13,499 INFO L93 Difference]: Finished difference Result 268 states and 307 transitions. [2022-11-02 21:08:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:08:13,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-11-02 21:08:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:13,501 INFO L225 Difference]: With dead ends: 268 [2022-11-02 21:08:13,501 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 21:08:13,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:13,502 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 4 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:13,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1352 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 329 Unchecked, 0.1s Time] [2022-11-02 21:08:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 21:08:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-11-02 21:08:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 193 states have (on average 1.5699481865284974) internal successors, (303), 264 states have internal predecessors, (303), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 307 transitions. [2022-11-02 21:08:13,509 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 307 transitions. Word has length 59 [2022-11-02 21:08:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:13,510 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 307 transitions. [2022-11-02 21:08:13,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 307 transitions. [2022-11-02 21:08:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 21:08:13,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:13,511 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:13,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:13,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:13,712 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:13,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:13,712 INFO L85 PathProgramCache]: Analyzing trace with hash 341240962, now seen corresponding path program 1 times [2022-11-02 21:08:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:13,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692881586] [2022-11-02 21:08:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:13,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:13,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:13,714 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:13,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:08:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:14,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:14,319 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 21:08:14,320 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-02 21:08:14,355 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 21:08:14,355 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 21:08:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:14,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:14,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:14,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692881586] [2022-11-02 21:08:14,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692881586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:14,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:14,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:08:14,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312908086] [2022-11-02 21:08:14,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:14,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:14,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:14,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:14,408 INFO L87 Difference]: Start difference. First operand 268 states and 307 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:15,080 INFO L93 Difference]: Finished difference Result 275 states and 314 transitions. [2022-11-02 21:08:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:08:15,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-11-02 21:08:15,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:15,082 INFO L225 Difference]: With dead ends: 275 [2022-11-02 21:08:15,082 INFO L226 Difference]: Without dead ends: 275 [2022-11-02 21:08:15,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:15,083 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 210 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:15,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 354 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:08:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-02 21:08:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2022-11-02 21:08:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 198 states have (on average 1.5656565656565657) internal successors, (310), 268 states have internal predecessors, (310), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 314 transitions. [2022-11-02 21:08:15,092 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 314 transitions. Word has length 59 [2022-11-02 21:08:15,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:15,093 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 314 transitions. [2022-11-02 21:08:15,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 314 transitions. [2022-11-02 21:08:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 21:08:15,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:15,094 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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 21:08:15,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:15,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:15,323 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:15,323 INFO L85 PathProgramCache]: Analyzing trace with hash -278071788, now seen corresponding path program 1 times [2022-11-02 21:08:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:15,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788603207] [2022-11-02 21:08:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:15,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:15,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:15,325 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:15,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:08:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:08:15,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:15,892 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 21:08:15,935 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 16 treesize of output 12 [2022-11-02 21:08:16,108 INFO L356 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-02 21:08:16,108 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 40 treesize of output 30 [2022-11-02 21:08:16,237 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 25 treesize of output 11 [2022-11-02 21:08:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:16,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:16,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:16,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788603207] [2022-11-02 21:08:16,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788603207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:16,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:16,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:16,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121211233] [2022-11-02 21:08:16,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:16,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:08:16,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:16,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:08:16,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:16,260 INFO L87 Difference]: Start difference. First operand 272 states and 314 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:18,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:08:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:19,809 INFO L93 Difference]: Finished difference Result 270 states and 310 transitions. [2022-11-02 21:08:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2022-11-02 21:08:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:19,820 INFO L225 Difference]: With dead ends: 270 [2022-11-02 21:08:19,820 INFO L226 Difference]: Without dead ends: 270 [2022-11-02 21:08:19,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:19,823 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 236 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:19,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1002 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 419 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 21:08:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-02 21:08:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-11-02 21:08:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 198 states have (on average 1.5454545454545454) internal successors, (306), 266 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 310 transitions. [2022-11-02 21:08:19,831 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 310 transitions. Word has length 62 [2022-11-02 21:08:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:19,832 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 310 transitions. [2022-11-02 21:08:19,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:19,832 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 310 transitions. [2022-11-02 21:08:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 21:08:19,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:19,833 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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 21:08:19,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:20,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:20,040 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash -278071787, now seen corresponding path program 1 times [2022-11-02 21:08:20,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:20,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535948657] [2022-11-02 21:08:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:20,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:20,043 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:20,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:08:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:20,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:08:20,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:20,742 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 10 treesize of output 8 [2022-11-02 21:08:20,768 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 21:08:20,809 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 16 treesize of output 12 [2022-11-02 21:08:20,831 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 16 treesize of output 12 [2022-11-02 21:08:20,943 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 21 treesize of output 23 [2022-11-02 21:08:20,966 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 21 [2022-11-02 21:08:21,054 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 25 treesize of output 7 [2022-11-02 21:08:21,058 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 27 treesize of output 9 [2022-11-02 21:08:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:21,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:21,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:21,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535948657] [2022-11-02 21:08:21,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535948657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:21,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:21,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598296208] [2022-11-02 21:08:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:21,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:21,090 INFO L87 Difference]: Start difference. First operand 270 states and 310 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:23,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:23,381 INFO L93 Difference]: Finished difference Result 269 states and 308 transitions. [2022-11-02 21:08:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:23,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2022-11-02 21:08:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:23,384 INFO L225 Difference]: With dead ends: 269 [2022-11-02 21:08:23,384 INFO L226 Difference]: Without dead ends: 269 [2022-11-02 21:08:23,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:23,385 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 228 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:23,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 848 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:08:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-02 21:08:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-11-02 21:08:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 198 states have (on average 1.5353535353535352) internal successors, (304), 265 states have internal predecessors, (304), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 308 transitions. [2022-11-02 21:08:23,392 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 308 transitions. Word has length 62 [2022-11-02 21:08:23,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:23,393 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 308 transitions. [2022-11-02 21:08:23,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 308 transitions. [2022-11-02 21:08:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:08:23,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:23,394 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 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 21:08:23,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:23,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:23,595 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:23,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash -450354753, now seen corresponding path program 1 times [2022-11-02 21:08:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:23,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410975782] [2022-11-02 21:08:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:23,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:23,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:23,598 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:23,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:08:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:08:24,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:24,321 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 10 treesize of output 8 [2022-11-02 21:08:24,397 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:08:24,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 21:08:24,447 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 16 treesize of output 12 [2022-11-02 21:08:24,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-11-02 21:08:24,824 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:08:24,824 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 45 treesize of output 46 [2022-11-02 21:08:24,890 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 42 treesize of output 15 [2022-11-02 21:08:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:25,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:25,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:25,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410975782] [2022-11-02 21:08:25,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410975782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:25,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:25,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:08:25,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578959406] [2022-11-02 21:08:25,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:25,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:08:25,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:08:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:25,008 INFO L87 Difference]: Start difference. First operand 269 states and 308 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:26,956 INFO L93 Difference]: Finished difference Result 290 states and 330 transitions. [2022-11-02 21:08:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:26,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-11-02 21:08:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:26,958 INFO L225 Difference]: With dead ends: 290 [2022-11-02 21:08:26,958 INFO L226 Difference]: Without dead ends: 290 [2022-11-02 21:08:26,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:26,959 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 453 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:26,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 805 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 342 Invalid, 0 Unknown, 91 Unchecked, 1.7s Time] [2022-11-02 21:08:26,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-02 21:08:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 278. [2022-11-02 21:08:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 207 states have (on average 1.541062801932367) internal successors, (319), 274 states have internal predecessors, (319), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 323 transitions. [2022-11-02 21:08:26,966 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 323 transitions. Word has length 66 [2022-11-02 21:08:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:26,967 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 323 transitions. [2022-11-02 21:08:26,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 323 transitions. [2022-11-02 21:08:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:08:26,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:26,968 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 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 21:08:26,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:27,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:27,169 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:27,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash -450354752, now seen corresponding path program 1 times [2022-11-02 21:08:27,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:27,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621611736] [2022-11-02 21:08:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:27,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:27,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:27,172 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:27,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:08:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:27,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:08:27,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:27,823 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 10 treesize of output 8 [2022-11-02 21:08:27,877 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 21:08:27,898 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:08:27,899 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 21:08:27,958 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 16 treesize of output 12 [2022-11-02 21:08:27,987 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 16 treesize of output 12 [2022-11-02 21:08:28,161 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 34 treesize of output 34 [2022-11-02 21:08:28,187 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 21 [2022-11-02 21:08:28,398 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:08:28,398 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 58 treesize of output 57 [2022-11-02 21:08:28,424 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 28 treesize of output 30 [2022-11-02 21:08:28,577 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 40 treesize of output 13 [2022-11-02 21:08:28,585 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 25 treesize of output 7 [2022-11-02 21:08:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 21:08:28,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:28,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:28,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621611736] [2022-11-02 21:08:28,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621611736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:28,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:28,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:08:28,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640070398] [2022-11-02 21:08:28,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:28,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:08:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:28,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:08:28,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:28,634 INFO L87 Difference]: Start difference. First operand 278 states and 323 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:31,157 INFO L93 Difference]: Finished difference Result 290 states and 327 transitions. [2022-11-02 21:08:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:08:31,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-11-02 21:08:31,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:31,159 INFO L225 Difference]: With dead ends: 290 [2022-11-02 21:08:31,159 INFO L226 Difference]: Without dead ends: 290 [2022-11-02 21:08:31,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:08:31,160 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 267 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:31,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 586 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:08:31,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-02 21:08:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 278. [2022-11-02 21:08:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 207 states have (on average 1.5217391304347827) internal successors, (315), 274 states have internal predecessors, (315), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 319 transitions. [2022-11-02 21:08:31,166 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 319 transitions. Word has length 66 [2022-11-02 21:08:31,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:31,167 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 319 transitions. [2022-11-02 21:08:31,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 319 transitions. [2022-11-02 21:08:31,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 21:08:31,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:31,168 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:31,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:31,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:31,381 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1408765628, now seen corresponding path program 1 times [2022-11-02 21:08:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:31,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056490775] [2022-11-02 21:08:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:31,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:31,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:31,383 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:31,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:08:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:08:32,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:32,204 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 10 treesize of output 8 [2022-11-02 21:08:32,275 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:08:32,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 21:08:32,329 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 16 treesize of output 12 [2022-11-02 21:08:32,462 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 36 treesize of output 36 [2022-11-02 21:08:32,658 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:08:32,658 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 45 treesize of output 46 [2022-11-02 21:08:32,835 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:08:32,835 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 45 treesize of output 46 [2022-11-02 21:08:32,908 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 42 treesize of output 15 [2022-11-02 21:08:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-02 21:08:33,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:33,301 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1318 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1318) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-02 21:08:33,349 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1318 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1317 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1317))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1318)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-02 21:08:33,379 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1318 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1317 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1317))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1318)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-02 21:08:33,421 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1316 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1318 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1317 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1316))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1317)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1318)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-02 21:08:33,466 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:08:33,466 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 78 [2022-11-02 21:08:33,472 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 3087 treesize of output 2376 [2022-11-02 21:08:33,596 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 2072 treesize of output 1610 [2022-11-02 21:08:33,618 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 1610 treesize of output 1414 [2022-11-02 21:08:33,633 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 1414 treesize of output 1358 [2022-11-02 21:08:44,836 INFO L356 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-11-02 21:08:44,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 30 [2022-11-02 21:08:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2022-11-02 21:08:44,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:44,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056490775] [2022-11-02 21:08:44,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056490775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:44,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:44,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2022-11-02 21:08:44,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397364826] [2022-11-02 21:08:44,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:44,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:08:44,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:44,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:08:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=164, Unknown=7, NotChecked=116, Total=342 [2022-11-02 21:08:44,852 INFO L87 Difference]: Start difference. First operand 278 states and 319 transitions. Second operand has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:47,565 INFO L93 Difference]: Finished difference Result 280 states and 319 transitions. [2022-11-02 21:08:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:47,566 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2022-11-02 21:08:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:47,567 INFO L225 Difference]: With dead ends: 280 [2022-11-02 21:08:47,567 INFO L226 Difference]: Without dead ends: 280 [2022-11-02 21:08:47,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=74, Invalid=207, Unknown=7, NotChecked=132, Total=420 [2022-11-02 21:08:47,568 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 18 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 699 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:47,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2529 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 385 Invalid, 0 Unknown, 699 Unchecked, 1.8s Time] [2022-11-02 21:08:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-02 21:08:47,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2022-11-02 21:08:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 207 states have (on average 1.5169082125603865) internal successors, (314), 274 states have internal predecessors, (314), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:08:47,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 318 transitions. [2022-11-02 21:08:47,575 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 318 transitions. Word has length 71 [2022-11-02 21:08:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:47,575 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 318 transitions. [2022-11-02 21:08:47,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:08:47,576 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 318 transitions. [2022-11-02 21:08:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 21:08:47,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:47,577 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:47,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:47,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:47,800 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-02 21:08:47,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:47,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1408765627, now seen corresponding path program 1 times [2022-11-02 21:08:47,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:47,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125613872] [2022-11-02 21:08:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:47,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:47,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:47,803 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:47,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aacfee3-75f4-49c9-b21b-918e52417d11/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:08:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:48,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 21:08:48,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:48,642 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 10 treesize of output 8 [2022-11-02 21:08:48,694 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:08:48,695 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 21:08:48,703 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 21:08:48,752 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 16 treesize of output 12 [2022-11-02 21:08:48,777 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 16 treesize of output 12 [2022-11-02 21:08:48,932 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 34 treesize of output 34 [2022-11-02 21:08:48,938 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 21 [2022-11-02 21:08:49,172 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:08:49,173 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 58 treesize of output 57 [2022-11-02 21:08:49,199 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 28 treesize of output 30 [2022-11-02 21:08:49,544 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:08:49,545 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 58 treesize of output 57 [2022-11-02 21:08:49,579 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 28 treesize of output 30 [2022-11-02 21:08:49,799 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 40 treesize of output 13 [2022-11-02 21:08:49,808 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 25 treesize of output 7 [2022-11-02 21:08:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-02 21:08:49,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:52,210 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1437 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1437) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0)))) (forall ((v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (bvule (bvadd .cse2 .cse1) (bvadd (_ bv1 64) .cse2 .cse1)))))) is different from false [2022-11-02 21:08:52,371 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse1 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 .cse1) (bvadd (_ bv1 64) .cse0 .cse1)))) (forall ((v_ArrVal_1437 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1437) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))))))) is different from false [2022-11-02 21:08:52,556 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_ArrVal_1437 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd .cse0 (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1437) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))))))) is different from false [2022-11-02 21:08:52,680 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1437 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1435 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1434 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1435))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1434) .cse0 v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) .cse2 (_ bv1 64)) (select |c_#length| (select (select (store .cse3 .cse0 v_ArrVal_1437) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1435 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1434 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1434) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1435) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (bvule (bvadd .cse4 .cse2) (bvadd .cse4 .cse2 (_ bv1 64))))))) is different from false [2022-11-02 21:08:52,792 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse3 ((_ sign_extend 32) (_ bv1 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1437 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1435 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1434 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1435))) (let ((.cse1 (select (select .cse4 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1434) .cse1 v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) .cse3 (_ bv1 64)) (select |c_#length| (select (select (store .cse4 .cse1 v_ArrVal_1437) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1435 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1434 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1434) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1435) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd .cse5 .cse3) (bvadd .cse5 .cse3 (_ bv1 64)))))))) is different from false [2022-11-02 21:08:52,999 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse3 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1437 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1433 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1432 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1435 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1434 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1432))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_1435))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv1 64) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1433) .cse1 v_ArrVal_1434) .cse2 v_ArrVal_1436) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1437) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_1436 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1433 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1432 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1435 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1434 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1432))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1433) .cse7 v_ArrVal_1434) (select (select (store .cse8 .cse7 v_ArrVal_1435) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3) v_ArrVal_1436))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 .cse6) (bvadd .cse0 (_ bv1 64) .cse6)))))) is different from false [2022-11-02 21:08:53,120 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:08:53,120 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 227 treesize of output 228 [2022-11-02 21:08:53,153 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:08:53,153 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 214 treesize of output 137 [2022-11-02 21:08:53,173 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 81375 treesize of output 68388 [2022-11-02 21:08:54,878 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 1245093 treesize of output 1204764 [2022-11-02 21:09:00,591 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 1204760 treesize of output 1084696 [2022-11-02 21:09:03,417 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 1084696 treesize of output 948469 [2022-11-02 21:09:06,129 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 948469 treesize of output 828405 [2022-11-02 21:09:08,914 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 828405 treesize of output 797045 [2022-11-02 21:09:11,634 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 797045 treesize of output 739701 [2022-11-02 21:09:14,497 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 739701 treesize of output 660832 [2022-11-02 21:09:37,704 WARN L234 SmtUtils]: Spent 9.17s on a formula simplification. DAG size of input: 959 DAG size of output: 959 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-02 21:09:54,468 WARN L234 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 949 DAG size of output: 949 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)