./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9fb52f5a8769e751d5dc39d93dc642433ae2f5b ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9fb52f5a8769e751d5dc39d93dc642433ae2f5b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:32,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:32,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:32,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:32,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:32,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:32,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:32,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:32,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:32,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:32,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:32,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:32,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:32,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:32,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:32,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:32,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:32,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:32,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:32,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:32,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:32,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:32,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:32,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:32,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:32,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:32,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:32,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:32,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:32,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:32,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:32,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:32,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:32,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:32,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:32,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:32,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:32,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:32,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:32,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:32,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:32,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:27:32,644 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:32,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:32,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:32,645 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:32,646 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:32,646 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:32,646 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:32,646 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:32,646 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:32,647 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:32,647 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:32,647 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:32,647 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:32,647 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:32,647 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:32,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:27:32,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:27:32,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:32,649 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:32,649 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:32,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:32,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:32,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:32,650 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:27:32,650 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:27:32,650 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:27:32,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:32,650 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:32,651 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:32,651 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:32,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:32,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:32,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:32,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:32,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:32,652 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:32,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:32,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:32,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:32,653 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9fb52f5a8769e751d5dc39d93dc642433ae2f5b [2021-10-11 02:27:32,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:32,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:32,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:32,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:32,973 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:32,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2021-10-11 02:27:33,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data/37926b442/236c352717a74538a351fa9b7ec2c375/FLAG135ae6ced [2021-10-11 02:27:33,590 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:33,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2021-10-11 02:27:33,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data/37926b442/236c352717a74538a351fa9b7ec2c375/FLAG135ae6ced [2021-10-11 02:27:33,875 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data/37926b442/236c352717a74538a351fa9b7ec2c375 [2021-10-11 02:27:33,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:33,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:33,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:33,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:33,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:33,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78cd69f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33, skipping insertion in model container [2021-10-11 02:27:33,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:33,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:34,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:34,402 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-11 02:27:34,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@503803b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34, skipping insertion in model container [2021-10-11 02:27:34,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:34,404 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:27:34,406 INFO L168 Benchmark]: Toolchain (without parser) took 526.06 ms. Allocated memory is still 109.1 MB. Free memory was 66.2 MB in the beginning and 81.7 MB in the end (delta: -15.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:34,406 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 84.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:34,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.50 ms. Allocated memory is still 109.1 MB. Free memory was 66.0 MB in the beginning and 81.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:34,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 84.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 523.50 ms. Allocated memory is still 109.1 MB. Free memory was 66.0 MB in the beginning and 81.7 MB in the end (delta: -15.7 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:36,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:36,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:36,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:36,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:36,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:36,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:36,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:36,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:36,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:36,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:36,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:36,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:36,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:36,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:36,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:36,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:36,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:36,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:36,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:36,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:36,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:36,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:36,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:36,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:36,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:36,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:36,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:36,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:36,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:36,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:36,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:36,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:36,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:36,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:36,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:36,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:36,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:36,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:36,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:36,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:36,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:27:36,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:36,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:36,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:36,781 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:36,781 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:36,782 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:36,782 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:36,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:36,782 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:36,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:27:36,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:27:36,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:36,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:36,785 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:36,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:36,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:36,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:36,786 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:27:36,786 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:27:36,786 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:27:36,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:36,787 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:36,787 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:27:36,787 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:27:36,787 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:36,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:36,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:36,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:27:36,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:36,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:36,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:36,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:36,789 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:27:36,789 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:36,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:36,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:36,790 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_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9fb52f5a8769e751d5dc39d93dc642433ae2f5b [2021-10-11 02:27:37,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:37,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:37,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:37,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:37,221 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:37,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2021-10-11 02:27:37,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data/748ba11b6/b21255fc574d47e096db511fbe699852/FLAGe40950e7a [2021-10-11 02:27:38,100 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:38,101 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/sv-benchmarks/c/ldv-memsafety/memleaks_test22_4.i [2021-10-11 02:27:38,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data/748ba11b6/b21255fc574d47e096db511fbe699852/FLAGe40950e7a [2021-10-11 02:27:38,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/data/748ba11b6/b21255fc574d47e096db511fbe699852 [2021-10-11 02:27:38,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:38,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:38,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:38,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:38,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:38,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:38" (1/1) ... [2021-10-11 02:27:38,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aba536b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:38, skipping insertion in model container [2021-10-11 02:27:38,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:38" (1/1) ... [2021-10-11 02:27:38,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:38,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:38,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:38,793 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:27:38,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:38,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:38,921 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:38,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:39,106 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:39,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39 WrapperNode [2021-10-11 02:27:39,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:39,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:39,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:39,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:39,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... [2021-10-11 02:27:39,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... [2021-10-11 02:27:39,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:39,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:39,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:39,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:39,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... [2021-10-11 02:27:39,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... [2021-10-11 02:27:39,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... [2021-10-11 02:27:39,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... [2021-10-11 02:27:39,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... [2021-10-11 02:27:39,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... [2021-10-11 02:27:39,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... [2021-10-11 02:27:39,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:39,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:39,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:39,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:39,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:39,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:27:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:27:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:27:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:27:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:27:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:27:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-11 02:27:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:39,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:40,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:40,153 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2021-10-11 02:27:40,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:40 BoogieIcfgContainer [2021-10-11 02:27:40,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:40,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:40,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:40,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:40,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:38" (1/3) ... [2021-10-11 02:27:40,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682e1206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:40, skipping insertion in model container [2021-10-11 02:27:40,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:39" (2/3) ... [2021-10-11 02:27:40,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682e1206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:40, skipping insertion in model container [2021-10-11 02:27:40,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:40" (3/3) ... [2021-10-11 02:27:40,164 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_4.i [2021-10-11 02:27:40,176 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:40,179 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2021-10-11 02:27:40,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2021-10-11 02:27:40,231 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:40,231 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:27:40,232 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:40,232 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:40,232 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:40,232 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:40,232 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:40,232 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-10-11 02:27:40,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:40,254 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:40,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:40,256 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:40,262 INFO L82 PathProgramCache]: Analyzing trace with hash 889508776, now seen corresponding path program 1 times [2021-10-11 02:27:40,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:40,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608697018] [2021-10-11 02:27:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:40,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:27:40,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:40,495 INFO L382 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 [2021-10-11 02:27:40,496 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:40,503 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:40,505 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:40,505 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:27:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:40,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:40,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608697018] [2021-10-11 02:27:40,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:40,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:40,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672579850] [2021-10-11 02:27:40,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:40,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:40,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:40,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:40,571 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 5 states. [2021-10-11 02:27:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:41,170 INFO L93 Difference]: Finished difference Result 216 states and 234 transitions. [2021-10-11 02:27:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:41,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-10-11 02:27:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:41,185 INFO L225 Difference]: With dead ends: 216 [2021-10-11 02:27:41,186 INFO L226 Difference]: Without dead ends: 208 [2021-10-11 02:27:41,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-11 02:27:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 74. [2021-10-11 02:27:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:27:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-10-11 02:27:41,244 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 6 [2021-10-11 02:27:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:41,245 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-10-11 02:27:41,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-10-11 02:27:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:41,245 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:41,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:41,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:27:41,447 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:41,448 INFO L82 PathProgramCache]: Analyzing trace with hash 889568358, now seen corresponding path program 1 times [2021-10-11 02:27:41,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:41,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711252109] [2021-10-11 02:27:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:41,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:27:41,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:41,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:41,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711252109] [2021-10-11 02:27:41,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:41,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:41,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780744438] [2021-10-11 02:27:41,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:41,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:41,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:41,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:41,554 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2021-10-11 02:27:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:41,596 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-10-11 02:27:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:41,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:27:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:41,599 INFO L225 Difference]: With dead ends: 166 [2021-10-11 02:27:41,599 INFO L226 Difference]: Without dead ends: 166 [2021-10-11 02:27:41,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-11 02:27:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 72. [2021-10-11 02:27:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-10-11 02:27:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2021-10-11 02:27:41,610 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 6 [2021-10-11 02:27:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:41,610 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2021-10-11 02:27:41,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2021-10-11 02:27:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:27:41,612 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:41,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:41,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:27:41,830 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:41,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:41,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1804968328, now seen corresponding path program 1 times [2021-10-11 02:27:41,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:41,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496010408] [2021-10-11 02:27:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:41,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:27:41,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:41,948 INFO L382 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 [2021-10-11 02:27:41,949 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:41,956 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:41,957 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:41,958 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-10-11 02:27:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:42,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:42,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496010408] [2021-10-11 02:27:42,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:42,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:27:42,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542748842] [2021-10-11 02:27:42,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:42,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:42,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:42,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:27:42,028 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 6 states. [2021-10-11 02:27:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:42,513 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2021-10-11 02:27:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:42,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2021-10-11 02:27:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:42,518 INFO L225 Difference]: With dead ends: 165 [2021-10-11 02:27:42,519 INFO L226 Difference]: Without dead ends: 165 [2021-10-11 02:27:42,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:27:42,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-11 02:27:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 71. [2021-10-11 02:27:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-10-11 02:27:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-10-11 02:27:42,537 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 7 [2021-10-11 02:27:42,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:42,537 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-10-11 02:27:42,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:42,538 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-10-11 02:27:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:27:42,538 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:42,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:42,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:27:42,756 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash 119421555, now seen corresponding path program 1 times [2021-10-11 02:27:42,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:42,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464048011] [2021-10-11 02:27:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:42,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:42,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:42,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:42,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464048011] [2021-10-11 02:27:42,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:42,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:42,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871003458] [2021-10-11 02:27:42,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:42,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:42,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:42,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:42,922 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 4 states. [2021-10-11 02:27:42,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:42,978 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2021-10-11 02:27:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:42,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:27:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:42,982 INFO L225 Difference]: With dead ends: 118 [2021-10-11 02:27:42,982 INFO L226 Difference]: Without dead ends: 118 [2021-10-11 02:27:42,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:42,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-11 02:27:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 71. [2021-10-11 02:27:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-10-11 02:27:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2021-10-11 02:27:42,991 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 8 [2021-10-11 02:27:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:42,991 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2021-10-11 02:27:42,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2021-10-11 02:27:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:27:42,992 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:42,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:43,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:27:43,214 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash 176679857, now seen corresponding path program 1 times [2021-10-11 02:27:43,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:43,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67115413] [2021-10-11 02:27:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:43,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:27:43,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:43,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:43,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67115413] [2021-10-11 02:27:43,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:43,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:43,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569514155] [2021-10-11 02:27:43,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:43,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:43,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:43,371 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 4 states. [2021-10-11 02:27:43,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:43,427 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions. [2021-10-11 02:27:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:43,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:27:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:43,429 INFO L225 Difference]: With dead ends: 145 [2021-10-11 02:27:43,429 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:27:43,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:27:43,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 73. [2021-10-11 02:27:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-10-11 02:27:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2021-10-11 02:27:43,445 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 8 [2021-10-11 02:27:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:43,445 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2021-10-11 02:27:43,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2021-10-11 02:27:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:43,447 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:43,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:43,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:27:43,659 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:43,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:43,659 INFO L82 PathProgramCache]: Analyzing trace with hash 820865718, now seen corresponding path program 1 times [2021-10-11 02:27:43,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:43,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973931301] [2021-10-11 02:27:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:43,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:27:43,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:43,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:43,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973931301] [2021-10-11 02:27:43,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:43,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:43,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660276951] [2021-10-11 02:27:43,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:43,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:43,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:43,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:43,817 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 4 states. [2021-10-11 02:27:43,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:43,841 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2021-10-11 02:27:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:43,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:27:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:43,843 INFO L225 Difference]: With dead ends: 110 [2021-10-11 02:27:43,843 INFO L226 Difference]: Without dead ends: 110 [2021-10-11 02:27:43,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:43,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-11 02:27:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 74. [2021-10-11 02:27:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 02:27:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-10-11 02:27:43,850 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 12 [2021-10-11 02:27:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:43,850 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-10-11 02:27:43,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-10-11 02:27:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:43,852 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:43,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:44,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:27:44,069 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2137107767, now seen corresponding path program 1 times [2021-10-11 02:27:44,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:44,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402382547] [2021-10-11 02:27:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:44,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:27:44,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:44,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:44,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402382547] [2021-10-11 02:27:44,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:44,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:44,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948989092] [2021-10-11 02:27:44,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:44,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:44,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:44,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:44,190 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 3 states. [2021-10-11 02:27:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:44,318 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2021-10-11 02:27:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:44,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-10-11 02:27:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:44,320 INFO L225 Difference]: With dead ends: 101 [2021-10-11 02:27:44,320 INFO L226 Difference]: Without dead ends: 98 [2021-10-11 02:27:44,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-11 02:27:44,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2021-10-11 02:27:44,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-10-11 02:27:44,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2021-10-11 02:27:44,326 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 12 [2021-10-11 02:27:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:44,326 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2021-10-11 02:27:44,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:44,327 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2021-10-11 02:27:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:44,327 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:44,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:44,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:27:44,528 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:44,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:44,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2137106293, now seen corresponding path program 1 times [2021-10-11 02:27:44,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:44,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099903724] [2021-10-11 02:27:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:44,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:27:44,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:44,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:44,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099903724] [2021-10-11 02:27:44,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:44,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:27:44,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32217590] [2021-10-11 02:27:44,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:44,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:44,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:44,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:44,737 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 5 states. [2021-10-11 02:27:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:44,804 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2021-10-11 02:27:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:44,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:27:44,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:44,812 INFO L225 Difference]: With dead ends: 80 [2021-10-11 02:27:44,812 INFO L226 Difference]: Without dead ends: 72 [2021-10-11 02:27:44,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-11 02:27:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-10-11 02:27:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:27:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2021-10-11 02:27:44,818 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 12 [2021-10-11 02:27:44,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:44,819 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2021-10-11 02:27:44,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:44,819 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2021-10-11 02:27:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:27:44,820 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:44,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:45,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:27:45,027 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:45,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:45,027 INFO L82 PathProgramCache]: Analyzing trace with hash -382225646, now seen corresponding path program 1 times [2021-10-11 02:27:45,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:45,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603960536] [2021-10-11 02:27:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:45,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:45,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:45,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:45,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603960536] [2021-10-11 02:27:45,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1681511548] [2021-10-11 02:27:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:45,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:45,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:45,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:45,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825978315] [2021-10-11 02:27:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:45,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:27:45,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:45,540 INFO L382 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 [2021-10-11 02:27:45,542 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:45,545 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:45,546 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:45,546 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:27:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:45,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:45,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:27:45,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5, 5] total 13 [2021-10-11 02:27:45,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969525706] [2021-10-11 02:27:45,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:27:45,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:45,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:27:45,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:27:45,639 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 7 states. [2021-10-11 02:27:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:46,083 INFO L93 Difference]: Finished difference Result 153 states and 162 transitions. [2021-10-11 02:27:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:46,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2021-10-11 02:27:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:46,085 INFO L225 Difference]: With dead ends: 153 [2021-10-11 02:27:46,085 INFO L226 Difference]: Without dead ends: 153 [2021-10-11 02:27:46,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:27:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-11 02:27:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 69. [2021-10-11 02:27:46,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-10-11 02:27:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2021-10-11 02:27:46,090 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 13 [2021-10-11 02:27:46,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:46,090 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2021-10-11 02:27:46,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:27:46,090 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2021-10-11 02:27:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:27:46,091 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:46,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:46,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:46,703 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:46,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:46,703 INFO L82 PathProgramCache]: Analyzing trace with hash -382225645, now seen corresponding path program 1 times [2021-10-11 02:27:46,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:46,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078598331] [2021-10-11 02:27:46,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:46,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:46,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:46,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:46,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078598331] [2021-10-11 02:27:46,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [886443063] [2021-10-11 02:27:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:47,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:47,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:47,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:47,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516267973] [2021-10-11 02:27:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:47,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 02:27:47,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:47,175 INFO L382 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 [2021-10-11 02:27:47,176 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:47,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:47,182 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:47,182 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-10-11 02:27:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:47,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:47,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:27:47,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5, 5] total 14 [2021-10-11 02:27:47,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616975575] [2021-10-11 02:27:47,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:47,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:47,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:47,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:27:47,329 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 8 states. [2021-10-11 02:27:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:47,858 INFO L93 Difference]: Finished difference Result 164 states and 176 transitions. [2021-10-11 02:27:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:27:47,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2021-10-11 02:27:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:47,860 INFO L225 Difference]: With dead ends: 164 [2021-10-11 02:27:47,860 INFO L226 Difference]: Without dead ends: 164 [2021-10-11 02:27:47,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:27:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-11 02:27:47,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 68. [2021-10-11 02:27:47,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-10-11 02:27:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-10-11 02:27:47,863 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 13 [2021-10-11 02:27:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:47,864 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-10-11 02:27:47,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-10-11 02:27:47,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:47,864 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:47,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:48,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt,13 mathsat -unsat_core_generation=3,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:48,468 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:48,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:48,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2046988466, now seen corresponding path program 1 times [2021-10-11 02:27:48,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:48,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600387629] [2021-10-11 02:27:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:48,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:48,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:48,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:48,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600387629] [2021-10-11 02:27:48,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [118564032] [2021-10-11 02:27:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:48,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:27:48,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:48,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:48,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:27:48,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2021-10-11 02:27:48,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811342763] [2021-10-11 02:27:48,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:48,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:48,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:48,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:27:48,869 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 5 states. [2021-10-11 02:27:48,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:48,909 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2021-10-11 02:27:48,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:48,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:27:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:48,910 INFO L225 Difference]: With dead ends: 68 [2021-10-11 02:27:48,911 INFO L226 Difference]: Without dead ends: 68 [2021-10-11 02:27:48,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:27:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-11 02:27:48,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-10-11 02:27:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-10-11 02:27:48,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-10-11 02:27:48,914 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 15 [2021-10-11 02:27:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:48,915 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-10-11 02:27:48,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:48,915 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-10-11 02:27:48,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:48,916 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:48,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:49,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3,17 cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:49,334 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:49,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2048342003, now seen corresponding path program 1 times [2021-10-11 02:27:49,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:49,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682512807] [2021-10-11 02:27:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:49,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:49,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:49,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:49,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682512807] [2021-10-11 02:27:49,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [920832651] [2021-10-11 02:27:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:49,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:49,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:49,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:49,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374019139] [2021-10-11 02:27:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:49,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:27:49,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:49,769 INFO L382 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 [2021-10-11 02:27:49,770 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:49,773 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:49,773 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:49,773 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:27:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:49,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:49,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:27:49,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5, 5] total 13 [2021-10-11 02:27:49,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405353871] [2021-10-11 02:27:49,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:27:49,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:49,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:27:49,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:27:49,853 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 7 states. [2021-10-11 02:27:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:50,146 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2021-10-11 02:27:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:50,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-10-11 02:27:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:50,147 INFO L225 Difference]: With dead ends: 110 [2021-10-11 02:27:50,147 INFO L226 Difference]: Without dead ends: 110 [2021-10-11 02:27:50,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:27:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-11 02:27:50,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2021-10-11 02:27:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-10-11 02:27:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-10-11 02:27:50,151 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 15 [2021-10-11 02:27:50,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:50,151 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-10-11 02:27:50,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:27:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-10-11 02:27:50,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:27:50,152 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:50,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:50,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3,19 cvc4 --incremental --print-success --lang smt,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:50,767 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:50,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2048342004, now seen corresponding path program 1 times [2021-10-11 02:27:50,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:50,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805887642] [2021-10-11 02:27:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:50,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:50,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:50,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:51,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805887642] [2021-10-11 02:27:51,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [362668133] [2021-10-11 02:27:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:51,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:51,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:51,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:51,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146877643] [2021-10-11 02:27:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:51,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 02:27:51,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:51,317 INFO L382 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 [2021-10-11 02:27:51,318 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:51,324 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:51,325 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:51,326 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-10-11 02:27:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:51,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:51,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:27:51,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5, 5] total 14 [2021-10-11 02:27:51,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343433897] [2021-10-11 02:27:51,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:51,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:51,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:51,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:27:51,490 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 8 states. [2021-10-11 02:27:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:51,876 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-10-11 02:27:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:27:51,877 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2021-10-11 02:27:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:51,877 INFO L225 Difference]: With dead ends: 112 [2021-10-11 02:27:51,877 INFO L226 Difference]: Without dead ends: 112 [2021-10-11 02:27:51,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:27:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-11 02:27:51,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 64. [2021-10-11 02:27:51,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-10-11 02:27:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2021-10-11 02:27:51,880 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 15 [2021-10-11 02:27:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:51,880 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2021-10-11 02:27:51,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2021-10-11 02:27:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:27:51,881 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:51,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:52,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3,22 cvc4 --incremental --print-success --lang smt,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:52,494 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:52,495 INFO L82 PathProgramCache]: Analyzing trace with hash -927294538, now seen corresponding path program 1 times [2021-10-11 02:27:52,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:52,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50594163] [2021-10-11 02:27:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:52,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:52,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:52,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:52,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50594163] [2021-10-11 02:27:52,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [714622049] [2021-10-11 02:27:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 25 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:52,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:27:52,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:52,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:52,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:27:52,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 12 [2021-10-11 02:27:52,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316161076] [2021-10-11 02:27:52,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:52,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:52,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:52,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:27:52,897 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 6 states. [2021-10-11 02:27:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:53,023 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-10-11 02:27:53,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:53,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-10-11 02:27:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:53,024 INFO L225 Difference]: With dead ends: 64 [2021-10-11 02:27:53,024 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 02:27:53,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:27:53,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 02:27:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-11 02:27:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-10-11 02:27:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2021-10-11 02:27:53,028 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2021-10-11 02:27:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:53,028 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2021-10-11 02:27:53,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2021-10-11 02:27:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:27:53,030 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:53,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:53,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4 --incremental --print-success --lang smt,24 mathsat -unsat_core_generation=3 [2021-10-11 02:27:53,432 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:53,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:53,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1235581409, now seen corresponding path program 1 times [2021-10-11 02:27:53,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:53,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374320390] [2021-10-11 02:27:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:53,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:53,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:53,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:53,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374320390] [2021-10-11 02:27:53,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1873709256] [2021-10-11 02:27:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 27 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:53,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:53,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:53,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475515532] [2021-10-11 02:27:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:53,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:27:53,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:53,984 INFO L382 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 [2021-10-11 02:27:53,985 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:53,987 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:53,988 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:53,988 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:27:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:54,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:54,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:27:54,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5, 5] total 13 [2021-10-11 02:27:54,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661942184] [2021-10-11 02:27:54,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:27:54,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:54,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:27:54,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:27:54,094 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 7 states. [2021-10-11 02:27:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:54,378 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2021-10-11 02:27:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:54,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-10-11 02:27:54,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:54,379 INFO L225 Difference]: With dead ends: 94 [2021-10-11 02:27:54,379 INFO L226 Difference]: Without dead ends: 94 [2021-10-11 02:27:54,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:27:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-11 02:27:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 62. [2021-10-11 02:27:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-10-11 02:27:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-10-11 02:27:54,382 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 20 [2021-10-11 02:27:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:54,383 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-10-11 02:27:54,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:27:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-10-11 02:27:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:27:54,384 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:54,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:54,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 cvc4 --incremental --print-success --lang smt,26 mathsat -unsat_core_generation=3 [2021-10-11 02:27:54,991 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:54,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1235581408, now seen corresponding path program 1 times [2021-10-11 02:27:54,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:54,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606009660] [2021-10-11 02:27:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:55,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:55,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:55,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:55,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606009660] [2021-10-11 02:27:55,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [249924680] [2021-10-11 02:27:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 30 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:55,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:55,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:55,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:55,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832967615] [2021-10-11 02:27:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:55,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-11 02:27:55,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:55,742 INFO L382 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 [2021-10-11 02:27:55,743 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:55,748 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:55,749 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:55,749 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-10-11 02:27:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:55,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:55,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:27:55,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5, 5] total 14 [2021-10-11 02:27:55,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291094433] [2021-10-11 02:27:55,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:55,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:55,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:55,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:27:55,906 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 8 states. [2021-10-11 02:27:56,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:56,355 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2021-10-11 02:27:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:27:56,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2021-10-11 02:27:56,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:56,357 INFO L225 Difference]: With dead ends: 96 [2021-10-11 02:27:56,357 INFO L226 Difference]: Without dead ends: 96 [2021-10-11 02:27:56,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:27:56,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-11 02:27:56,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2021-10-11 02:27:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 02:27:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-10-11 02:27:56,361 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 20 [2021-10-11 02:27:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:56,361 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-10-11 02:27:56,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-10-11 02:27:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:27:56,362 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:56,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:56,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 cvc4 --incremental --print-success --lang smt,29 mathsat -unsat_core_generation=3,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:56,963 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:56,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1919246501, now seen corresponding path program 1 times [2021-10-11 02:27:56,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:56,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13155945] [2021-10-11 02:27:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 32 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:57,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:57,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:57,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:57,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13155945] [2021-10-11 02:27:57,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1458094529] [2021-10-11 02:27:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 33 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:57,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:27:57,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:57,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:57,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:27:57,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 12 [2021-10-11 02:27:57,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954452798] [2021-10-11 02:27:57,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:57,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:57,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:27:57,497 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 6 states. [2021-10-11 02:27:57,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:57,578 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-10-11 02:27:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:57,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-10-11 02:27:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:57,579 INFO L225 Difference]: With dead ends: 60 [2021-10-11 02:27:57,579 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:27:57,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:27:57,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:27:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-11 02:27:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 02:27:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-11 02:27:57,582 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 24 [2021-10-11 02:27:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,582 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-11 02:27:57,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-11 02:27:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 02:27:57,583 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:57,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:57,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 cvc4 --incremental --print-success --lang smt,32 mathsat -unsat_core_generation=3 [2021-10-11 02:27:57,984 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:57,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:57,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1114764973, now seen corresponding path program 1 times [2021-10-11 02:27:57,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:57,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145665396] [2021-10-11 02:27:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 34 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:58,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:58,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:58,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:58,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145665396] [2021-10-11 02:27:58,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2018182730] [2021-10-11 02:27:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 35 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:58,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:27:58,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:58,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:58,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:27:58,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5] total 13 [2021-10-11 02:27:58,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744033356] [2021-10-11 02:27:58,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:27:58,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:27:58,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:27:58,452 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 7 states. [2021-10-11 02:27:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:58,567 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2021-10-11 02:27:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:27:58,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2021-10-11 02:27:58,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:58,568 INFO L225 Difference]: With dead ends: 60 [2021-10-11 02:27:58,568 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:27:58,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:27:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:27:58,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-11 02:27:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 02:27:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-10-11 02:27:58,570 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 29 [2021-10-11 02:27:58,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:58,571 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-10-11 02:27:58,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:27:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-10-11 02:27:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 02:27:58,571 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:58,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:58,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 cvc4 --incremental --print-success --lang smt,34 mathsat -unsat_core_generation=3 [2021-10-11 02:27:58,985 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:27:58,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:58,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1114763499, now seen corresponding path program 1 times [2021-10-11 02:27:58,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:58,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171888292] [2021-10-11 02:27:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 36 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:59,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:59,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:59,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:59,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171888292] [2021-10-11 02:27:59,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [242740439] [2021-10-11 02:27:59,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 37 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:59,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:59,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:59,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:59,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010310842] [2021-10-11 02:27:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:59,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:27:59,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:59,590 INFO L382 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 [2021-10-11 02:27:59,591 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:59,592 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:59,592 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:59,593 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:27:59,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:59,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:59,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:27:59,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5, 5] total 14 [2021-10-11 02:27:59,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745064480] [2021-10-11 02:27:59,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:59,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:59,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:59,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:27:59,690 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 8 states. [2021-10-11 02:27:59,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:59,968 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-10-11 02:27:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:27:59,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-10-11 02:27:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:59,969 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:27:59,969 INFO L226 Difference]: Without dead ends: 62 [2021-10-11 02:27:59,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:27:59,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-11 02:27:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-10-11 02:27:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-10-11 02:27:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-10-11 02:27:59,972 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 29 [2021-10-11 02:27:59,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:59,972 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-10-11 02:27:59,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:59,972 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-10-11 02:27:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 02:27:59,973 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:59,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:00,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 mathsat -unsat_core_generation=3,37 cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:00,583 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:28:00,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:00,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1114763500, now seen corresponding path program 1 times [2021-10-11 02:28:00,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:00,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819600936] [2021-10-11 02:28:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 39 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:00,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:00,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819600936] [2021-10-11 02:28:00,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1089310161] [2021-10-11 02:28:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 40 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:00,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:00,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:00,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:01,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281348845] [2021-10-11 02:28:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:01,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:28:01,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:01,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:01,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:28:01,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-11 02:28:01,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133067087] [2021-10-11 02:28:01,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:28:01,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:01,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:28:01,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:28:01,218 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 8 states. [2021-10-11 02:28:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:01,278 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-11 02:28:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:28:01,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-10-11 02:28:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:01,280 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:28:01,280 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 02:28:01,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:28:01,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 02:28:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-11 02:28:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-10-11 02:28:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-11 02:28:01,282 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 29 [2021-10-11 02:28:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:01,283 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-11 02:28:01,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:28:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-11 02:28:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 02:28:01,284 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:01,284 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:01,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 mathsat -unsat_core_generation=3,40 cvc4 --incremental --print-success --lang smt,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:01,910 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:28:01,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:01,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1675302800, now seen corresponding path program 2 times [2021-10-11 02:28:01,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:01,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690419648] [2021-10-11 02:28:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 42 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:02,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:02,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:02,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:02,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690419648] [2021-10-11 02:28:02,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [50027900] [2021-10-11 02:28:02,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 43 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:02,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 02:28:02,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:28:02,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-11 02:28:02,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:02,616 INFO L382 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 [2021-10-11 02:28:02,617 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:02,623 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:02,623 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:02,624 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-10-11 02:28:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:28:02,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:02,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:28:02,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 8] total 23 [2021-10-11 02:28:02,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149816489] [2021-10-11 02:28:02,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:28:02,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:02,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:28:02,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-10-11 02:28:02,941 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 11 states. [2021-10-11 02:28:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:03,560 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-10-11 02:28:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:28:03,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2021-10-11 02:28:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:03,561 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:28:03,561 INFO L226 Difference]: Without dead ends: 59 [2021-10-11 02:28:03,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2021-10-11 02:28:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-11 02:28:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-11 02:28:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-10-11 02:28:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-10-11 02:28:03,563 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 32 [2021-10-11 02:28:03,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:03,563 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-10-11 02:28:03,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:28:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-10-11 02:28:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 02:28:03,564 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:03,564 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:03,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 mathsat -unsat_core_generation=3,43 cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:03,977 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:28:03,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1829604563, now seen corresponding path program 1 times [2021-10-11 02:28:03,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:03,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772986361] [2021-10-11 02:28:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 44 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:04,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:04,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:04,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:04,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772986361] [2021-10-11 02:28:04,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [575579163] [2021-10-11 02:28:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 45 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:04,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:04,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:04,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:04,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919967153] [2021-10-11 02:28:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:04,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-11 02:28:04,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:04,817 INFO L382 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 [2021-10-11 02:28:04,818 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:04,820 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:04,820 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:04,820 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:28:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:28:05,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:05,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:28:05,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 8, 8] total 21 [2021-10-11 02:28:05,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046799081] [2021-10-11 02:28:05,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:28:05,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:05,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:28:05,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-10-11 02:28:05,022 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 9 states. [2021-10-11 02:28:05,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:05,475 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2021-10-11 02:28:05,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:28:05,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2021-10-11 02:28:05,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:05,478 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:28:05,478 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 02:28:05,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-10-11 02:28:05,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 02:28:05,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2021-10-11 02:28:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-10-11 02:28:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-10-11 02:28:05,481 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 38 [2021-10-11 02:28:05,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:05,481 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-10-11 02:28:05,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:28:05,481 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-10-11 02:28:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 02:28:05,482 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:05,482 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:06,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 mathsat -unsat_core_generation=3,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:06,095 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:28:06,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:06,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1829604564, now seen corresponding path program 1 times [2021-10-11 02:28:06,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:06,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597146026] [2021-10-11 02:28:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 47 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:06,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:06,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:06,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597146026] [2021-10-11 02:28:06,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [965420876] [2021-10-11 02:28:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 48 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:06,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:06,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:06,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:06,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292211267] [2021-10-11 02:28:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:07,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-11 02:28:07,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:07,209 INFO L382 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 [2021-10-11 02:28:07,210 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:28:07,214 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:28:07,215 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:28:07,215 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-10-11 02:28:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:28:07,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:28:07,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2021-10-11 02:28:07,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 8, 8, 8] total 23 [2021-10-11 02:28:07,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697354826] [2021-10-11 02:28:07,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:28:07,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:07,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:28:07,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-10-11 02:28:07,585 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 11 states. [2021-10-11 02:28:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:08,347 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-10-11 02:28:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:28:08,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2021-10-11 02:28:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:08,350 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:28:08,350 INFO L226 Difference]: Without dead ends: 59 [2021-10-11 02:28:08,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2021-10-11 02:28:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-11 02:28:08,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2021-10-11 02:28:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 02:28:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2021-10-11 02:28:08,354 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 38 [2021-10-11 02:28:08,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:08,354 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2021-10-11 02:28:08,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:28:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2021-10-11 02:28:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-11 02:28:08,354 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:08,354 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:08,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 cvc4 --incremental --print-success --lang smt,47 mathsat -unsat_core_generation=3 [2021-10-11 02:28:08,956 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:28:08,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:08,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1609195225, now seen corresponding path program 1 times [2021-10-11 02:28:08,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:08,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708699224] [2021-10-11 02:28:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 50 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:09,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:09,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:09,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:09,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708699224] [2021-10-11 02:28:09,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [71031594] [2021-10-11 02:28:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 51 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:09,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:28:09,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:09,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:09,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800880037] [2021-10-11 02:28:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:09,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:28:09,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:09,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:10,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:28:10,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2021-10-11 02:28:10,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604320001] [2021-10-11 02:28:10,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-10-11 02:28:10,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:10,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-11 02:28:10,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:28:10,178 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 19 states. [2021-10-11 02:28:10,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:10,555 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-11 02:28:10,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:28:10,555 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2021-10-11 02:28:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:10,555 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:28:10,556 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 02:28:10,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 214 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2021-10-11 02:28:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 02:28:10,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-11 02:28:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-10-11 02:28:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-11 02:28:10,558 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 40 [2021-10-11 02:28:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:10,559 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-11 02:28:10,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-10-11 02:28:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-11 02:28:10,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-11 02:28:10,559 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:10,560 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:11,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,51 cvc4 --incremental --print-success --lang smt,50 mathsat -unsat_core_generation=3 [2021-10-11 02:28:11,187 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:28:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash -684056231, now seen corresponding path program 2 times [2021-10-11 02:28:11,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:11,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137422335] [2021-10-11 02:28:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 53 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:11,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:28:11,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:11,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:12,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137422335] [2021-10-11 02:28:12,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1902879394] [2021-10-11 02:28:12,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 54 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:28:12,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 02:28:12,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:28:12,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:28:12,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:12,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:12,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16212939] [2021-10-11 02:28:12,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:16,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 02:28:16,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:28:16,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:28:16,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:16,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:18,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:28:18,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 37 [2021-10-11 02:28:18,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326712940] [2021-10-11 02:28:18,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-10-11 02:28:18,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:28:18,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-11 02:28:18,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2021-10-11 02:28:18,111 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 37 states. [2021-10-11 02:28:18,652 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2021-10-11 02:28:18,902 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-10-11 02:28:19,154 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-10-11 02:28:20,026 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-10-11 02:28:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:20,331 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2021-10-11 02:28:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-11 02:28:20,332 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 46 [2021-10-11 02:28:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:20,332 INFO L225 Difference]: With dead ends: 73 [2021-10-11 02:28:20,332 INFO L226 Difference]: Without dead ends: 73 [2021-10-11 02:28:20,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=616, Invalid=1736, Unknown=0, NotChecked=0, Total=2352 [2021-10-11 02:28:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-11 02:28:20,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-11 02:28:20,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-10-11 02:28:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-10-11 02:28:20,336 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 46 [2021-10-11 02:28:20,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:20,336 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-10-11 02:28:20,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2021-10-11 02:28:20,336 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-10-11 02:28:20,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-11 02:28:20,337 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:20,337 INFO L422 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:20,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 cvc4 --incremental --print-success --lang smt,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,53 mathsat -unsat_core_generation=3 [2021-10-11 02:28:20,941 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2021-10-11 02:28:20,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:20,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1129186265, now seen corresponding path program 3 times [2021-10-11 02:28:20,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:28:20,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349681720] [2021-10-11 02:28:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02769429-f569-4a68-ab06-df93a9352326/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 56 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with mathsat -unsat_core_generation=3 [2021-10-11 02:28:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:21,276 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:21,551 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:21,661 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:28:21,661 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:28:21,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 mathsat -unsat_core_generation=3 [2021-10-11 02:28:21,895 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,896 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,896 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,897 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,898 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,898 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,898 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,899 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,899 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,899 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,899 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,900 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,900 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,900 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,900 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,901 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,901 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,901 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,901 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,902 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,902 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,902 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,902 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,903 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,903 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,903 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,904 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,904 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,904 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,904 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,905 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,905 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,905 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,906 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,906 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,906 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,906 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,907 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,907 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,907 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,907 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,908 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,908 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,908 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,908 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,909 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,909 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,909 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,909 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,910 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,919 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,920 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,920 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,920 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,921 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,922 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,923 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,925 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,925 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,926 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,926 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,926 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,927 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,927 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,928 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,929 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,929 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,929 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,931 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,931 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,932 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,932 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,932 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,936 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,936 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,936 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,937 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,937 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,939 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,944 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,944 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,945 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,945 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,945 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,945 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,946 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,946 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,946 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,947 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,949 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,949 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,949 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,950 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,950 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,950 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,950 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,950 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,951 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,951 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,951 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,951 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,952 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,952 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,952 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,952 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,952 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,953 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,953 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,953 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,953 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,954 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,954 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,954 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,954 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,955 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,955 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,956 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,956 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,957 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,957 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,957 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,957 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,958 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,958 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,958 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,958 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,959 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,959 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,959 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,960 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,960 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,960 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,960 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,961 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,961 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,961 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,962 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,962 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,962 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,962 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,963 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,963 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,963 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,963 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,964 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,964 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,964 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,964 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,965 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,965 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled [2021-10-11 02:28:21,966 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:21,966 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled [2021-10-11 02:28:22,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:22 BoogieIcfgContainer [2021-10-11 02:28:22,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:22,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:22,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:22,021 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:22,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:40" (3/4) ... [2021-10-11 02:28:22,025 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:28:22,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:22,026 INFO L168 Benchmark]: Toolchain (without parser) took 43718.19 ms. Allocated memory was 65.0 MB in the beginning and 136.3 MB in the end (delta: 71.3 MB). Free memory was 46.6 MB in the beginning and 89.3 MB in the end (delta: -42.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:22,026 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 47.7 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:22,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.22 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 46.5 MB in the beginning and 64.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:22,027 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.07 ms. Allocated memory is still 88.1 MB. Free memory was 64.5 MB in the beginning and 61.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:22,028 INFO L168 Benchmark]: Boogie Preprocessor took 53.25 ms. Allocated memory is still 88.1 MB. Free memory was 61.8 MB in the beginning and 59.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:22,028 INFO L168 Benchmark]: RCFGBuilder took 931.13 ms. Allocated memory is still 88.1 MB. Free memory was 59.3 MB in the beginning and 51.9 MB in the end (delta: 7.5 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:22,028 INFO L168 Benchmark]: TraceAbstraction took 41863.11 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 51.4 MB in the beginning and 90.4 MB in the end (delta: -39.0 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:22,029 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 136.3 MB. Free memory was 90.4 MB in the beginning and 89.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:22,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 47.7 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 799.22 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 46.5 MB in the beginning and 64.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.07 ms. Allocated memory is still 88.1 MB. Free memory was 64.5 MB in the beginning and 61.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.25 ms. Allocated memory is still 88.1 MB. Free memory was 61.8 MB in the beginning and 59.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 931.13 ms. Allocated memory is still 88.1 MB. Free memory was 59.3 MB in the beginning and 51.9 MB in the end (delta: 7.5 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 41863.11 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 51.4 MB in the beginning and 90.4 MB in the end (delta: -39.0 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.47 ms. Allocated memory is still 136.3 MB. Free memory was 90.4 MB in the beginning and 89.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 769. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={3:0}] [L764] struct ldv_kobject *kobj; [L740] struct ldv_kobject *kobj; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [ldv_global_msg_list={3:0}] [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L730] COND FALSE !(!kobj) [L723] COND FALSE !(!kobj) [L682] ((&kref->refcount)->counter) = (1) VAL [ldv_global_msg_list={3:0}] [L540] list->next = list VAL [ldv_global_msg_list={3:0}] [L541] list->prev = list VAL [ldv_global_msg_list={3:0}] [L746] return kobj; VAL [ldv_global_msg_list={3:0}] [L765] kobj = ldv_kobject_create() [L717] COND TRUE \read(*kobj) [L657] int temp; VAL [ldv_global_msg_list={3:0}] [L658] EXPR v->counter VAL [ldv_global_msg_list={3:0}] [L658] temp = v->counter [L659] temp += i VAL [ldv_global_msg_list={3:0}] [L660] v->counter = temp VAL [ldv_global_msg_list={3:0}] [L661] return temp; VAL [ldv_global_msg_list={3:0}] [L719] return kobj; VAL [ldv_global_msg_list={3:0}] [L711] COND TRUE \read(*kobj) [L665] int temp; VAL [ldv_global_msg_list={3:0}] [L666] EXPR v->counter VAL [ldv_global_msg_list={3:0}] [L666] temp = v->counter [L667] temp -= i VAL [ldv_global_msg_list={3:0}] [L668] v->counter = temp VAL [ldv_global_msg_list={3:0}] [L669] return temp; VAL [ldv_global_msg_list={3:0}] [L674] COND FALSE !((ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0)) [L678] return 0; VAL [ldv_global_msg_list={3:0}] [L690] return ldv_kref_sub(kref, 1, release); - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 25 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.6s, OverallIterations: 26, TraceHistogramMax: 16, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1798 SDtfs, 5563 SDslu, 3099 SDs, 0 SdLazy, 1689 SolverSat, 163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2123 GetRequests, 1764 SyntacticMatches, 5 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 845 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 7.5s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 1303 NumberOfCodeBlocks, 1299 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 2028 ConstructedInterpolants, 0 QuantifiedInterpolants, 155315 SizeOfPredicates, 316 NumberOfNonLiveVariables, 6497 ConjunctsInSsa, 487 ConjunctsInUnsatCore, 86 InterpolantComputations, 22 PerfectInterpolantSequences, 41/573 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...