./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF --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 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:53:36,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:53:36,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:53:36,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:53:36,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:53:36,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:53:36,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:53:36,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:53:36,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:53:36,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:53:36,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:53:36,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:53:36,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:53:36,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:53:36,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:53:36,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:53:36,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:53:36,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:53:36,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:53:36,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:53:36,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:53:36,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:53:36,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:53:36,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:53:36,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:53:36,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:53:36,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:53:36,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:53:36,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:53:36,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:53:36,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:53:36,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:53:36,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:53:36,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:53:36,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:53:36,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:53:36,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:53:36,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:53:36,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:53:36,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:53:36,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:53:36,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:53:36,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:53:36,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:53:36,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:53:36,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:53:36,663 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:53:36,663 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:53:36,663 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:53:36,663 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:53:36,663 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:53:36,664 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:53:36,665 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:53:36,665 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:53:36,665 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:53:36,665 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:53:36,666 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:53:36,666 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:53:36,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:53:36,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:53:36,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:53:36,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:53:36,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:53:36,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:53:36,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:53:36,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:53:36,668 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:53:36,668 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:53:36,670 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:53:36,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:53:36,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:53:36,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:53:36,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:53:36,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:53:36,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:53:36,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:36,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:53:36,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:53:36,672 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:53:36,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:53:36,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:53:36,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:53:36,673 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_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2021-11-12 23:53:36,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:53:36,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:53:36,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:53:36,953 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:53:36,956 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:53:36,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-12 23:53:37,027 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data/ea6fc4ac4/06049ff58acd46b5bc2834fae455c647/FLAGfcaa38dd1 [2021-11-12 23:53:37,748 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:53:37,749 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-12 23:53:37,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data/ea6fc4ac4/06049ff58acd46b5bc2834fae455c647/FLAGfcaa38dd1 [2021-11-12 23:53:37,940 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data/ea6fc4ac4/06049ff58acd46b5bc2834fae455c647 [2021-11-12 23:53:37,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:53:37,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:53:37,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:37,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:53:37,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:53:37,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:37" (1/1) ... [2021-11-12 23:53:37,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e7cd0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:37, skipping insertion in model container [2021-11-12 23:53:37,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:37" (1/1) ... [2021-11-12 23:53:37,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:53:38,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:38,489 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-11-12 23:53:38,626 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-11-12 23:53:38,627 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-11-12 23:53:38,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:38,645 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) [2021-11-12 23:53:38,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@261aff76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:38, skipping insertion in model container [2021-11-12 23:53:38,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:38,647 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:53:38,649 INFO L158 Benchmark]: Toolchain (without parser) took 702.63ms. Allocated memory is still 94.4MB. Free memory was 59.3MB in the beginning and 60.6MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:53:38,650 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory was 50.0MB in the beginning and 49.9MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:53:38,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.01ms. Allocated memory is still 94.4MB. Free memory was 59.3MB in the beginning and 60.6MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:53:38,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory was 50.0MB in the beginning and 49.9MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.01ms. Allocated memory is still 94.4MB. Free memory was 59.3MB in the beginning and 60.6MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF --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 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:53:41,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:53:41,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:53:41,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:53:41,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:53:41,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:53:41,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:53:41,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:53:41,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:53:41,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:53:41,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:53:41,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:53:41,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:53:41,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:53:41,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:53:41,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:53:41,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:53:41,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:53:41,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:53:41,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:53:41,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:53:41,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:53:41,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:53:41,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:53:41,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:53:41,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:53:41,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:53:41,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:53:41,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:53:41,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:53:41,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:53:41,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:53:41,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:53:41,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:53:41,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:53:41,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:53:41,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:53:41,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:53:41,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:53:41,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:53:41,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:53:41,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:53:41,391 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:53:41,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:53:41,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:53:41,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:53:41,394 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:53:41,394 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:53:41,394 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:53:41,395 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:53:41,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:53:41,395 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:53:41,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:53:41,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:53:41,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:53:41,399 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:53:41,399 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:53:41,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:53:41,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:53:41,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:53:41,400 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:53:41,400 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:53:41,401 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:53:41,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:53:41,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:53:41,401 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:53:41,402 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:53:41,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:53:41,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:53:41,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:53:41,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:53:41,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:53:41,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:41,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:53:41,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:53:41,405 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:53:41,405 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:41,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:53:41,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:53:41,414 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_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2021-11-12 23:53:41,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:53:41,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:53:41,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:53:41,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:53:41,901 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:53:41,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-12 23:53:41,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data/0c020f7f8/78b88e924a2d4bf6a628874e5ff41db9/FLAG91cc2bdae [2021-11-12 23:53:42,820 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:53:42,821 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-12 23:53:42,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data/0c020f7f8/78b88e924a2d4bf6a628874e5ff41db9/FLAG91cc2bdae [2021-11-12 23:53:42,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/data/0c020f7f8/78b88e924a2d4bf6a628874e5ff41db9 [2021-11-12 23:53:42,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:53:42,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:53:42,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:42,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:53:43,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:53:43,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:43,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f44178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:43, skipping insertion in model container [2021-11-12 23:53:43,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:42" (1/1) ... [2021-11-12 23:53:43,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:53:43,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:43,701 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-11-12 23:53:43,823 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-11-12 23:53:43,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-11-12 23:53:43,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:43,848 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:53:43,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:43,891 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-11-12 23:53:44,021 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-11-12 23:53:44,022 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-11-12 23:53:44,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:44,032 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:53:44,068 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-11-12 23:53:44,129 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-11-12 23:53:44,130 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-11-12 23:53:44,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:44,201 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:53:44,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44 WrapperNode [2021-11-12 23:53:44,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:44,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:53:44,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:53:44,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:53:44,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:53:44,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:53:44,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:53:44,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:53:44,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:53:44,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:53:44,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:53:44,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:53:44,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (1/1) ... [2021-11-12 23:53:44,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:44,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:53:44,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:53:44,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:53:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:53:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:53:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:53:44,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:53:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:53:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:53:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:53:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:53:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:53:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:53:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:53:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:53:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:53:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:53:45,027 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:53:50,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:53:50,733 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-12 23:53:50,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:53:50 BoogieIcfgContainer [2021-11-12 23:53:50,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:53:50,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:53:50,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:53:50,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:53:50,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:53:42" (1/3) ... [2021-11-12 23:53:50,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32906e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:53:50, skipping insertion in model container [2021-11-12 23:53:50,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:44" (2/3) ... [2021-11-12 23:53:50,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32906e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:53:50, skipping insertion in model container [2021-11-12 23:53:50,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:53:50" (3/3) ... [2021-11-12 23:53:50,750 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2021-11-12 23:53:50,757 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:53:50,757 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 530 error locations. [2021-11-12 23:53:50,813 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:53:50,823 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:53:50,823 INFO L340 AbstractCegarLoop]: Starting to check reachability of 530 error locations. [2021-11-12 23:53:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 1050 states, 518 states have (on average 2.2548262548262548) internal successors, (1168), 1045 states have internal predecessors, (1168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:53:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:53:50,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:50,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:53:50,888 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:53:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-12 23:53:50,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:50,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316148865] [2021-11-12 23:53:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:50,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:50,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:50,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:50,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:53:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:51,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:53:51,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:51,297 INFO L388 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 [2021-11-12 23:53:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:51,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:51,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:51,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316148865] [2021-11-12 23:53:51,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316148865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:51,342 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:53:51,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:53:51,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587174430] [2021-11-12 23:53:51,346 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:51,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:53:51,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:51,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:53:51,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:53:51,408 INFO L87 Difference]: Start difference. First operand has 1050 states, 518 states have (on average 2.2548262548262548) internal successors, (1168), 1045 states have internal predecessors, (1168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:53,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:53,538 INFO L93 Difference]: Finished difference Result 1041 states and 1096 transitions. [2021-11-12 23:53:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:53:53,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 23:53:53,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:53,568 INFO L225 Difference]: With dead ends: 1041 [2021-11-12 23:53:53,568 INFO L226 Difference]: Without dead ends: 1039 [2021-11-12 23:53:53,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:53:53,575 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 969 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1621.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.94ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2016.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:53,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 670 Invalid, 552 Unknown, 0 Unchecked, 18.94ms Time], IncrementalHoareTripleChecker [16 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 2016.66ms Time] [2021-11-12 23:53:53,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2021-11-12 23:53:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1031. [2021-11-12 23:53:53,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 516 states have (on average 2.0949612403100777) internal successors, (1081), 1026 states have internal predecessors, (1081), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:53:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1087 transitions. [2021-11-12 23:53:53,682 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1087 transitions. Word has length 3 [2021-11-12 23:53:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:53,682 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1087 transitions. [2021-11-12 23:53:53,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1087 transitions. [2021-11-12 23:53:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:53:53,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:53,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:53:53,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:53:53,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:53,900 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:53:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:53,901 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-12 23:53:53,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:53,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32021341] [2021-11-12 23:53:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:53,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:53,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:53,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:53,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:53:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:54,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:53:54,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:54,111 INFO L388 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 [2021-11-12 23:53:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:54,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:54,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:54,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32021341] [2021-11-12 23:53:54,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32021341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:54,215 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:53:54,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:53:54,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043440744] [2021-11-12 23:53:54,216 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:54,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:53:54,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:53:54,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:53:54,218 INFO L87 Difference]: Start difference. First operand 1031 states and 1087 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:00,167 INFO L93 Difference]: Finished difference Result 1496 states and 1584 transitions. [2021-11-12 23:54:00,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:54:00,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 23:54:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:00,177 INFO L225 Difference]: With dead ends: 1496 [2021-11-12 23:54:00,177 INFO L226 Difference]: Without dead ends: 1496 [2021-11-12 23:54:00,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:00,178 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 1544 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5076.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.25ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5845.40ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:00,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1364 Invalid, 880 Unknown, 0 Unchecked, 22.25ms Time], IncrementalHoareTripleChecker [18 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 5845.40ms Time] [2021-11-12 23:54:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-11-12 23:54:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1066. [2021-11-12 23:54:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 560 states have (on average 2.0714285714285716) internal successors, (1160), 1061 states have internal predecessors, (1160), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1166 transitions. [2021-11-12 23:54:00,217 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1166 transitions. Word has length 3 [2021-11-12 23:54:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:00,217 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1166 transitions. [2021-11-12 23:54:00,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1166 transitions. [2021-11-12 23:54:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:54:00,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:00,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:00,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:00,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:00,430 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:00,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:00,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-12 23:54:00,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:00,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980689962] [2021-11-12 23:54:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:00,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:00,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:00,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:00,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:54:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:00,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:54:00,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:00,599 INFO L388 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 [2021-11-12 23:54:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:00,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:00,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:00,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980689962] [2021-11-12 23:54:00,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980689962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:00,660 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:00,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:54:00,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004763970] [2021-11-12 23:54:00,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:00,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:54:00,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:54:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:54:00,667 INFO L87 Difference]: Start difference. First operand 1066 states and 1166 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:03,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:03,032 INFO L93 Difference]: Finished difference Result 1396 states and 1521 transitions. [2021-11-12 23:54:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:54:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:54:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:03,044 INFO L225 Difference]: With dead ends: 1396 [2021-11-12 23:54:03,044 INFO L226 Difference]: Without dead ends: 1396 [2021-11-12 23:54:03,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:54:03,046 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 975 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1924.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.64ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2308.58ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:03,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1168 Invalid, 759 Unknown, 0 Unchecked, 9.64ms Time], IncrementalHoareTripleChecker [51 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 2308.58ms Time] [2021-11-12 23:54:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-11-12 23:54:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1019. [2021-11-12 23:54:03,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 560 states have (on average 1.9821428571428572) internal successors, (1110), 1014 states have internal predecessors, (1110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1116 transitions. [2021-11-12 23:54:03,087 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1116 transitions. Word has length 8 [2021-11-12 23:54:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:03,088 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 1116 transitions. [2021-11-12 23:54:03,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1116 transitions. [2021-11-12 23:54:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:54:03,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:03,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:03,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:03,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:03,303 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:03,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:03,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-12 23:54:03,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:03,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095653609] [2021-11-12 23:54:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:03,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:03,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:03,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:03,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:54:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:03,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:54:03,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:03,480 INFO L388 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 [2021-11-12 23:54:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:03,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:03,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:03,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095653609] [2021-11-12 23:54:03,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095653609] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:03,674 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:03,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:54:03,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343822371] [2021-11-12 23:54:03,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:03,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:54:03,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:03,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:54:03,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:03,677 INFO L87 Difference]: Start difference. First operand 1019 states and 1116 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:09,284 INFO L93 Difference]: Finished difference Result 1440 states and 1529 transitions. [2021-11-12 23:54:09,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:54:09,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:54:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:09,292 INFO L225 Difference]: With dead ends: 1440 [2021-11-12 23:54:09,292 INFO L226 Difference]: Without dead ends: 1440 [2021-11-12 23:54:09,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:09,294 INFO L933 BasicCegarLoop]: 1099 mSDtfsCounter, 717 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4908.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.52ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5525.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:09,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 1909 Invalid, 1161 Unknown, 0 Unchecked, 13.52ms Time], IncrementalHoareTripleChecker [14 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 5525.36ms Time] [2021-11-12 23:54:09,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-11-12 23:54:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1009. [2021-11-12 23:54:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 560 states have (on average 1.9589285714285714) internal successors, (1097), 1004 states have internal predecessors, (1097), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1103 transitions. [2021-11-12 23:54:09,324 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1103 transitions. Word has length 8 [2021-11-12 23:54:09,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:09,325 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 1103 transitions. [2021-11-12 23:54:09,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1103 transitions. [2021-11-12 23:54:09,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:54:09,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:09,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:09,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:09,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:09,540 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:09,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:09,540 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-11-12 23:54:09,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:09,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12240614] [2021-11-12 23:54:09,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:09,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:09,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:09,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:09,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:54:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:09,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:54:09,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:09,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:09,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:09,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12240614] [2021-11-12 23:54:09,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12240614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:09,810 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:09,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:54:09,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721924655] [2021-11-12 23:54:09,810 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:09,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:54:09,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:09,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:54:09,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:09,812 INFO L87 Difference]: Start difference. First operand 1009 states and 1103 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:10,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:10,630 INFO L93 Difference]: Finished difference Result 1456 states and 1582 transitions. [2021-11-12 23:54:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:54:10,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 23:54:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:10,639 INFO L225 Difference]: With dead ends: 1456 [2021-11-12 23:54:10,639 INFO L226 Difference]: Without dead ends: 1456 [2021-11-12 23:54:10,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:54:10,641 INFO L933 BasicCegarLoop]: 1082 mSDtfsCounter, 548 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 652.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.54ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 755.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:10,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 2931 Invalid, 247 Unknown, 0 Unchecked, 7.54ms Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 755.87ms Time] [2021-11-12 23:54:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-11-12 23:54:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1246. [2021-11-12 23:54:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 797 states have (on average 1.9422835633626099) internal successors, (1548), 1241 states have internal predecessors, (1548), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1554 transitions. [2021-11-12 23:54:10,680 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1554 transitions. Word has length 11 [2021-11-12 23:54:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:10,680 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 1554 transitions. [2021-11-12 23:54:10,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1554 transitions. [2021-11-12 23:54:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 23:54:10,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:10,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:10,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:10,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:10,893 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr529ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1242933253, now seen corresponding path program 1 times [2021-11-12 23:54:10,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:10,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895703127] [2021-11-12 23:54:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:10,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:10,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:10,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:54:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:11,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:54:11,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:11,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:54:11,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:54:11,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:54:11,093 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 23:54:11,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-12 23:54:11,153 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 23:54:11,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-12 23:54:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:11,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:11,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:11,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895703127] [2021-11-12 23:54:11,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895703127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:11,243 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:11,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:54:11,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577483264] [2021-11-12 23:54:11,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:11,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:54:11,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:11,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:54:11,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:54:11,245 INFO L87 Difference]: Start difference. First operand 1246 states and 1554 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:12,733 INFO L93 Difference]: Finished difference Result 1602 states and 1969 transitions. [2021-11-12 23:54:12,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:54:12,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 23:54:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:12,742 INFO L225 Difference]: With dead ends: 1602 [2021-11-12 23:54:12,743 INFO L226 Difference]: Without dead ends: 1602 [2021-11-12 23:54:12,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:54:12,744 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 708 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1249.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.58ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1430.37ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:12,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 2792 Invalid, 255 Unknown, 0 Unchecked, 5.58ms Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1430.37ms Time] [2021-11-12 23:54:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-11-12 23:54:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1245. [2021-11-12 23:54:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 796 states have (on average 1.9422110552763818) internal successors, (1546), 1240 states have internal predecessors, (1546), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:12,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1552 transitions. [2021-11-12 23:54:12,781 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1552 transitions. Word has length 12 [2021-11-12 23:54:12,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:12,781 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1552 transitions. [2021-11-12 23:54:12,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1552 transitions. [2021-11-12 23:54:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:54:12,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:12,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:12,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:54:12,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:12,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:12,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:12,999 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-12 23:54:12,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:13,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115521901] [2021-11-12 23:54:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:13,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:13,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:13,004 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:13,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:54:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:13,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:54:13,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:13,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:13,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:13,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115521901] [2021-11-12 23:54:13,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115521901] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:13,263 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:13,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:54:13,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13909510] [2021-11-12 23:54:13,263 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:13,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:54:13,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:54:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:13,264 INFO L87 Difference]: Start difference. First operand 1245 states and 1552 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:13,311 INFO L93 Difference]: Finished difference Result 1185 states and 1466 transitions. [2021-11-12 23:54:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:54:13,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 23:54:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:13,320 INFO L225 Difference]: With dead ends: 1185 [2021-11-12 23:54:13,320 INFO L226 Difference]: Without dead ends: 1185 [2021-11-12 23:54:13,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:13,321 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 1914 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.38ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:13,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 995 Invalid, 16 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 22.38ms Time] [2021-11-12 23:54:13,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2021-11-12 23:54:13,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2021-11-12 23:54:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 760 states have (on average 1.9210526315789473) internal successors, (1460), 1180 states have internal predecessors, (1460), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1466 transitions. [2021-11-12 23:54:13,354 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1466 transitions. Word has length 18 [2021-11-12 23:54:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:13,354 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1466 transitions. [2021-11-12 23:54:13,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1466 transitions. [2021-11-12 23:54:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:54:13,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:13,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:13,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 23:54:13,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:13,576 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-12 23:54:13,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:13,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669806582] [2021-11-12 23:54:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:13,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:13,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:13,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:13,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:54:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:13,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:54:13,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:13,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:13,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:13,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669806582] [2021-11-12 23:54:13,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669806582] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:13,843 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:13,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:54:13,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037521405] [2021-11-12 23:54:13,844 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:13,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:54:13,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:13,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:54:13,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:54:13,845 INFO L87 Difference]: Start difference. First operand 1185 states and 1466 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:13,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:13,933 INFO L93 Difference]: Finished difference Result 1157 states and 1410 transitions. [2021-11-12 23:54:13,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:54:13,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-12 23:54:13,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:13,938 INFO L225 Difference]: With dead ends: 1157 [2021-11-12 23:54:13,939 INFO L226 Difference]: Without dead ends: 1157 [2021-11-12 23:54:13,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:54:13,940 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 1846 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.75ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:13,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 1871 Invalid, 79 Unknown, 0 Unchecked, 4.75ms Time], IncrementalHoareTripleChecker [45 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 58.67ms Time] [2021-11-12 23:54:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-12 23:54:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1155. [2021-11-12 23:54:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 744 states have (on average 1.8844086021505377) internal successors, (1402), 1150 states have internal predecessors, (1402), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1408 transitions. [2021-11-12 23:54:13,968 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1408 transitions. Word has length 20 [2021-11-12 23:54:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:13,969 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1408 transitions. [2021-11-12 23:54:13,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:13,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1408 transitions. [2021-11-12 23:54:13,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 23:54:13,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:13,970 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-12 23:54:13,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:14,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:14,183 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-12 23:54:14,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:14,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561524394] [2021-11-12 23:54:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:14,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:14,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:14,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:14,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:54:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:14,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:54:14,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:14,336 INFO L388 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 [2021-11-12 23:54:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:14,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:14,567 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:14,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561524394] [2021-11-12 23:54:14,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561524394] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:14,567 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:14,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:54:14,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884318496] [2021-11-12 23:54:14,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:14,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:54:14,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:54:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:14,569 INFO L87 Difference]: Start difference. First operand 1155 states and 1408 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:16,505 INFO L93 Difference]: Finished difference Result 1618 states and 1991 transitions. [2021-11-12 23:54:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:54:16,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-12 23:54:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:16,514 INFO L225 Difference]: With dead ends: 1618 [2021-11-12 23:54:16,514 INFO L226 Difference]: Without dead ends: 1618 [2021-11-12 23:54:16,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:54:16,515 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 1684 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1604.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.28ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1894.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:16,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 1009 Invalid, 933 Unknown, 0 Unchecked, 7.28ms Time], IncrementalHoareTripleChecker [19 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 1894.68ms Time] [2021-11-12 23:54:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2021-11-12 23:54:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1151. [2021-11-12 23:54:16,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 744 states have (on average 1.8736559139784945) internal successors, (1394), 1146 states have internal predecessors, (1394), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1400 transitions. [2021-11-12 23:54:16,549 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1400 transitions. Word has length 34 [2021-11-12 23:54:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:16,549 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1400 transitions. [2021-11-12 23:54:16,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:16,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1400 transitions. [2021-11-12 23:54:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 23:54:16,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:16,551 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-12 23:54:16,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:16,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:16,764 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:16,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-12 23:54:16,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:16,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058954930] [2021-11-12 23:54:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:16,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:16,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:16,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:16,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:54:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:16,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:54:16,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:16,910 INFO L388 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 [2021-11-12 23:54:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:17,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:17,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:17,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058954930] [2021-11-12 23:54:17,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058954930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:17,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:17,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:54:17,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410946474] [2021-11-12 23:54:17,676 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:17,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:54:17,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:17,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:54:17,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:54:17,677 INFO L87 Difference]: Start difference. First operand 1151 states and 1400 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:24,321 INFO L93 Difference]: Finished difference Result 1751 states and 2146 transitions. [2021-11-12 23:54:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:54:24,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-12 23:54:24,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:24,328 INFO L225 Difference]: With dead ends: 1751 [2021-11-12 23:54:24,329 INFO L226 Difference]: Without dead ends: 1751 [2021-11-12 23:54:24,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:54:24,329 INFO L933 BasicCegarLoop]: 1151 mSDtfsCounter, 1825 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5810.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.14ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6495.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:24,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 2395 Invalid, 1563 Unknown, 0 Unchecked, 13.14ms Time], IncrementalHoareTripleChecker [10 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 6495.64ms Time] [2021-11-12 23:54:24,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-11-12 23:54:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1147. [2021-11-12 23:54:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 744 states have (on average 1.8629032258064515) internal successors, (1386), 1142 states have internal predecessors, (1386), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1392 transitions. [2021-11-12 23:54:24,355 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1392 transitions. Word has length 34 [2021-11-12 23:54:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:24,356 INFO L470 AbstractCegarLoop]: Abstraction has 1147 states and 1392 transitions. [2021-11-12 23:54:24,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1392 transitions. [2021-11-12 23:54:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:54:24,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:24,358 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:24,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:24,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:24,570 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:24,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-12 23:54:24,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:24,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397941314] [2021-11-12 23:54:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:24,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:24,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:24,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:24,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:54:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:24,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:54:24,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:24,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:24,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:24,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397941314] [2021-11-12 23:54:24,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397941314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:24,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:24,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:54:24,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950640262] [2021-11-12 23:54:24,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:24,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:54:24,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:54:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:24,989 INFO L87 Difference]: Start difference. First operand 1147 states and 1392 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:25,046 INFO L93 Difference]: Finished difference Result 1135 states and 1372 transitions. [2021-11-12 23:54:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:54:25,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-12 23:54:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:25,052 INFO L225 Difference]: With dead ends: 1135 [2021-11-12 23:54:25,053 INFO L226 Difference]: Without dead ends: 1135 [2021-11-12 23:54:25,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:54:25,054 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 904 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:25,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 1849 Invalid, 43 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 36.97ms Time] [2021-11-12 23:54:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-12 23:54:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1135. [2021-11-12 23:54:25,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 732 states have (on average 1.866120218579235) internal successors, (1366), 1130 states have internal predecessors, (1366), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1372 transitions. [2021-11-12 23:54:25,114 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1372 transitions. Word has length 52 [2021-11-12 23:54:25,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:25,115 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1372 transitions. [2021-11-12 23:54:25,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1372 transitions. [2021-11-12 23:54:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 23:54:25,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:25,118 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:25,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:25,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:25,332 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:25,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:25,332 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-12 23:54:25,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:25,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507319544] [2021-11-12 23:54:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:25,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:25,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:25,334 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:25,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:54:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:25,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:54:25,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:25,758 INFO L388 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 [2021-11-12 23:54:25,767 INFO L388 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 [2021-11-12 23:54:26,453 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:54:26,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-12 23:54:26,475 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:54:26,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-12 23:54:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:26,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:31,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:31,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507319544] [2021-11-12 23:54:31,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507319544] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:31,460 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:31,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:54:31,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239360226] [2021-11-12 23:54:31,461 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:31,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:54:31,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:31,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:54:31,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 23:54:31,463 INFO L87 Difference]: Start difference. First operand 1135 states and 1372 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:36,436 INFO L93 Difference]: Finished difference Result 1746 states and 2081 transitions. [2021-11-12 23:54:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:54:36,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-12 23:54:36,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:36,444 INFO L225 Difference]: With dead ends: 1746 [2021-11-12 23:54:36,444 INFO L226 Difference]: Without dead ends: 1746 [2021-11-12 23:54:36,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 23:54:36,445 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 2212 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4202.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.21ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1470 IncrementalHoareTripleChecker+Unchecked, 4906.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:36,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 1575 Invalid, 2939 Unknown, 0 Unchecked, 15.21ms Time], IncrementalHoareTripleChecker [43 Valid, 1426 Invalid, 0 Unknown, 1470 Unchecked, 4906.15ms Time] [2021-11-12 23:54:36,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2021-11-12 23:54:36,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1113. [2021-11-12 23:54:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 742 states have (on average 1.8221024258760108) internal successors, (1352), 1108 states have internal predecessors, (1352), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1358 transitions. [2021-11-12 23:54:36,471 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1358 transitions. Word has length 60 [2021-11-12 23:54:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:36,471 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1358 transitions. [2021-11-12 23:54:36,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1358 transitions. [2021-11-12 23:54:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 23:54:36,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:36,473 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:36,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:36,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:36,687 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:36,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:36,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-12 23:54:36,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:36,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437631944] [2021-11-12 23:54:36,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:36,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:36,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:36,690 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:36,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:54:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:36,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:54:36,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:37,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:37,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 23:54:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:37,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:37,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437631944] [2021-11-12 23:54:37,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437631944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:37,486 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:37,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:54:37,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185960319] [2021-11-12 23:54:37,486 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:37,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:54:37,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:54:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:54:37,487 INFO L87 Difference]: Start difference. First operand 1113 states and 1358 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:39,153 INFO L93 Difference]: Finished difference Result 1111 states and 1356 transitions. [2021-11-12 23:54:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:54:39,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-12 23:54:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:39,159 INFO L225 Difference]: With dead ends: 1111 [2021-11-12 23:54:39,159 INFO L226 Difference]: Without dead ends: 1111 [2021-11-12 23:54:39,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:54:39,159 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 1732 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1414.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1641.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:39,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 505 Invalid, 456 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [20 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1641.25ms Time] [2021-11-12 23:54:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2021-11-12 23:54:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2021-11-12 23:54:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 742 states have (on average 1.8194070080862534) internal successors, (1350), 1106 states have internal predecessors, (1350), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1356 transitions. [2021-11-12 23:54:39,218 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1356 transitions. Word has length 62 [2021-11-12 23:54:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:39,219 INFO L470 AbstractCegarLoop]: Abstraction has 1111 states and 1356 transitions. [2021-11-12 23:54:39,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1356 transitions. [2021-11-12 23:54:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:54:39,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:39,221 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:39,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:39,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:39,434 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:39,435 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-12 23:54:39,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:39,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964331700] [2021-11-12 23:54:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:39,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:39,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:39,437 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:39,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:54:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:39,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:54:39,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:39,735 INFO L388 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 [2021-11-12 23:54:39,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 23:54:39,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-12 23:54:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:39,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:39,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:39,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964331700] [2021-11-12 23:54:39,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964331700] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:39,934 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:39,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:54:39,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667847762] [2021-11-12 23:54:39,935 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:39,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:54:39,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:39,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:54:39,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:54:39,936 INFO L87 Difference]: Start difference. First operand 1111 states and 1356 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:42,641 INFO L93 Difference]: Finished difference Result 1110 states and 1355 transitions. [2021-11-12 23:54:42,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:54:42,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-12 23:54:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:42,647 INFO L225 Difference]: With dead ends: 1110 [2021-11-12 23:54:42,647 INFO L226 Difference]: Without dead ends: 1110 [2021-11-12 23:54:42,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:54:42,648 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 4 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2292.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2652.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:42,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2257 Invalid, 1293 Unknown, 0 Unchecked, 6.92ms Time], IncrementalHoareTripleChecker [1 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 2652.45ms Time] [2021-11-12 23:54:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-12 23:54:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-12 23:54:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 742 states have (on average 1.8180592991913747) internal successors, (1349), 1105 states have internal predecessors, (1349), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:42,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1355 transitions. [2021-11-12 23:54:42,671 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1355 transitions. Word has length 65 [2021-11-12 23:54:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:42,671 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1355 transitions. [2021-11-12 23:54:42,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1355 transitions. [2021-11-12 23:54:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:54:42,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:42,673 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:42,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:42,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:42,886 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-12 23:54:42,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:42,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406522754] [2021-11-12 23:54:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:42,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:42,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:42,889 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:42,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:54:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:43,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:54:43,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:43,202 INFO L388 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 [2021-11-12 23:54:43,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-12 23:54:43,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:54:43,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-12 23:54:43,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-12 23:54:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:43,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:43,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:43,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406522754] [2021-11-12 23:54:43,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406522754] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:43,604 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:43,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:54:43,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669022974] [2021-11-12 23:54:43,605 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:43,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:54:43,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:43,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:54:43,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:54:43,606 INFO L87 Difference]: Start difference. First operand 1110 states and 1355 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:52,177 INFO L93 Difference]: Finished difference Result 1109 states and 1354 transitions. [2021-11-12 23:54:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:54:52,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-12 23:54:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:52,184 INFO L225 Difference]: With dead ends: 1109 [2021-11-12 23:54:52,184 INFO L226 Difference]: Without dead ends: 1109 [2021-11-12 23:54:52,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:54:52,185 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 2 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7648.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.00ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8476.59ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:52,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3213 Invalid, 2107 Unknown, 0 Unchecked, 12.00ms Time], IncrementalHoareTripleChecker [2 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 8476.59ms Time] [2021-11-12 23:54:52,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-12 23:54:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2021-11-12 23:54:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 741 states have (on average 1.8191632928475034) internal successors, (1348), 1104 states have internal predecessors, (1348), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:54:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1354 transitions. [2021-11-12 23:54:52,205 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1354 transitions. Word has length 65 [2021-11-12 23:54:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:52,206 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 1354 transitions. [2021-11-12 23:54:52,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:54:52,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1354 transitions. [2021-11-12 23:54:52,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 23:54:52,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:52,207 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:52,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:52,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:52,421 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:52,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1702947151, now seen corresponding path program 1 times [2021-11-12 23:54:52,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:52,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298734145] [2021-11-12 23:54:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:52,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:52,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:52,424 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:52,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:54:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:52,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:54:52,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:52,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:52,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:52,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298734145] [2021-11-12 23:54:52,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298734145] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:52,929 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:52,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:54:52,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997825162] [2021-11-12 23:54:52,929 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:52,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:54:52,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:52,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:54:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:54:52,931 INFO L87 Difference]: Start difference. First operand 1109 states and 1354 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:54:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:53,030 INFO L93 Difference]: Finished difference Result 1119 states and 1367 transitions. [2021-11-12 23:54:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:54:53,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-12 23:54:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:53,038 INFO L225 Difference]: With dead ends: 1119 [2021-11-12 23:54:53,038 INFO L226 Difference]: Without dead ends: 1119 [2021-11-12 23:54:53,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:54:53,039 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 11 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.19ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:53,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1773 Invalid, 33 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 69.19ms Time] [2021-11-12 23:54:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-12 23:54:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1119. [2021-11-12 23:54:53,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 749 states have (on average 1.8157543391188251) internal successors, (1360), 1113 states have internal predecessors, (1360), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 23:54:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1367 transitions. [2021-11-12 23:54:53,066 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1367 transitions. Word has length 73 [2021-11-12 23:54:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:53,067 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1367 transitions. [2021-11-12 23:54:53,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:54:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1367 transitions. [2021-11-12 23:54:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:54:53,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:53,068 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:53,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:53,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:53,286 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:53,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1510574161, now seen corresponding path program 1 times [2021-11-12 23:54:53,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:53,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663846021] [2021-11-12 23:54:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:53,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:53,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:53,287 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:53,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:54:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:53,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:54:53,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:53,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:53,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:53,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663846021] [2021-11-12 23:54:53,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663846021] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:53,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1886273311] [2021-11-12 23:54:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:53,855 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:54:53,861 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:54:53,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:54:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:54,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:54:54,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:54,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:54,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1886273311] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:54,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195941531] [2021-11-12 23:54:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:54,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:54,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:54,414 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:54:54,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-12 23:54:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:54,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:54:54,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:54,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:55,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195941531] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:55,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:54:55,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 23:54:55,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359839361] [2021-11-12 23:54:55,016 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:54:55,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:54:55,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:54:55,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:54:55,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:54:55,018 INFO L87 Difference]: Start difference. First operand 1119 states and 1367 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:54:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:55,558 INFO L93 Difference]: Finished difference Result 1133 states and 1384 transitions. [2021-11-12 23:54:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:54:55,560 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-12 23:54:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:55,567 INFO L225 Difference]: With dead ends: 1133 [2021-11-12 23:54:55,568 INFO L226 Difference]: Without dead ends: 1127 [2021-11-12 23:54:55,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:54:55,569 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 33 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5299 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.40ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.71ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:55,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 5299 Invalid, 140 Unknown, 0 Unchecked, 4.40ms Time], IncrementalHoareTripleChecker [24 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 245.71ms Time] [2021-11-12 23:54:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2021-11-12 23:54:55,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1125. [2021-11-12 23:54:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 755 states have (on average 1.8105960264900662) internal successors, (1367), 1119 states have internal predecessors, (1367), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-12 23:54:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1374 transitions. [2021-11-12 23:54:55,595 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1374 transitions. Word has length 75 [2021-11-12 23:54:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:55,596 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1374 transitions. [2021-11-12 23:54:55,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:54:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1374 transitions. [2021-11-12 23:54:55,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 23:54:55,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:55,597 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:54:55,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:55,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:56,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:56,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:54:56,221 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-12 23:54:56,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:56,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1938377839, now seen corresponding path program 2 times [2021-11-12 23:54:56,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:54:56,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032619194] [2021-11-12 23:54:56,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:54:56,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:54:56,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:54:56,224 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:54:56,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 23:54:56,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:54:56,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:54:56,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:54:56,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:56,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:57,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:54:57,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032619194] [2021-11-12 23:54:57,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032619194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:57,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1268495781] [2021-11-12 23:54:57,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:54:57,209 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:54:57,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:54:57,210 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:54:57,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-12 23:54:57,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:54:57,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:54:57,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:54:57,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:58,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:58,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1268495781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:58,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291233523] [2021-11-12 23:54:58,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:54:58,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:58,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:58,319 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:54:58,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-12 23:55:47,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:55:47,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:55:47,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 23:55:47,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:55:47,276 INFO L388 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 [2021-11-12 23:55:47,296 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 23:55:47,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2021-11-12 23:55:47,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:55:47,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-12 23:55:47,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-12 23:55:47,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-12 23:57:50,198 WARN L227 SmtUtils]: Spent 13.17s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:57:50,199 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-12 23:57:50,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-12 23:58:18,879 WARN L227 SmtUtils]: Spent 28.66s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:58:18,879 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-12 23:58:18,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-12 23:58:26,273 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-12 23:58:26,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-12 23:58:26,296 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-12 23:58:26,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-12 23:58:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 13 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:58:38,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:58:51,470 WARN L227 SmtUtils]: Spent 12.34s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:59:13,027 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr233_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_105| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr233_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr233_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_103|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr233_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_105|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (let ((.cse3 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse3))) (let ((.cse2 (bvadd .cse4 (_ bv20 32)))) (and (bvule .cse2 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse3))) (bvule (bvadd (_ bv16 32) .cse4) .cse2))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr233_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_105| (_ BitVec 32))) (not (let ((.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_106|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr233_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr233_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_103|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr233_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_105|)) (.cse12 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse6 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 .cse6) .cse7 .cse6) .cse8 .cse6) .cse9 .cse6) .cse10 .cse6) .cse11 .cse6))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse5 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse12)))))))) is different from false [2021-11-13 00:04:32,155 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr233_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_105| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr233_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr233_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_103|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr233_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_105|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr233| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr233|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse8 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse8) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse8))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr233| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse9 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse10 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr233|) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse10))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse9) (bvadd .cse9 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr233_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_105| (_ BitVec 32))) (not (let ((.cse11 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_106|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr233_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr233_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_103|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr233_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_105|)) (.cse18 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse11 .cse12) .cse13 .cse12) .cse14 .cse12) .cse15 .cse12) .cse16 .cse12) .cse17 .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse11 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18)))))))) is different from false [2021-11-13 00:04:41,389 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr233_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_105| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr233_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr233_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_103|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr233_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_105|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr233| (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr233|)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr233| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr233|) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd .cse10 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr233_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr233_105| (_ BitVec 32))) (not (let ((.cse12 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_106|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr233_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr233_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_103|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#t~loopctr233_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse18 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr233_105|)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from true [2021-11-13 00:05:33,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-13 00:05:33,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-13 00:05:33,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-13 00:05:33,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786294977] [2021-11-13 00:05:33,782 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-13 00:05:33,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 00:05:33,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 00:05:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 00:05:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1158, Unknown=171, NotChecked=228, Total=1722 [2021-11-13 00:05:33,784 INFO L87 Difference]: Start difference. First operand 1125 states and 1374 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 00:07:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 00:07:00,793 INFO L93 Difference]: Finished difference Result 1151 states and 1410 transitions. [2021-11-13 00:07:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-13 00:07:00,795 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-13 00:07:00,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 00:07:00,804 INFO L225 Difference]: With dead ends: 1151 [2021-11-13 00:07:00,805 INFO L226 Difference]: Without dead ends: 1147 [2021-11-13 00:07:00,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 567.6s TimeCoverageRelationStatistics Valid=506, Invalid=2619, Unknown=193, NotChecked=342, Total=3660 [2021-11-13 00:07:00,813 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 65 mSDsluCounter, 7095 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 835.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 7986 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.21ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 940.10ms IncrementalHoareTripleChecker+Time [2021-11-13 00:07:00,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 7986 Invalid, 360 Unknown, 0 Unchecked, 10.21ms Time], IncrementalHoareTripleChecker [60 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 940.10ms Time] [2021-11-13 00:07:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-11-13 00:07:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1137. [2021-11-13 00:07:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 767 states have (on average 1.803129074315515) internal successors, (1383), 1131 states have internal predecessors, (1383), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-13 00:07:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1390 transitions. [2021-11-13 00:07:00,835 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1390 transitions. Word has length 79 [2021-11-13 00:07:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 00:07:00,836 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1390 transitions. [2021-11-13 00:07:00,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 00:07:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1390 transitions. [2021-11-13 00:07:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 00:07:00,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 00:07:00,838 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 00:07:00,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 00:07:01,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-13 00:07:01,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-13 00:07:01,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 00:07:01,456 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 526 more)] === [2021-11-13 00:07:01,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 00:07:01,456 INFO L85 PathProgramCache]: Analyzing trace with hash -654977553, now seen corresponding path program 3 times [2021-11-13 00:07:01,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 00:07:01,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256883482] [2021-11-13 00:07:01,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 00:07:01,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 00:07:01,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 00:07:01,462 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 00:07:01,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 00:07:02,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 00:07:02,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 00:07:02,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 00:07:02,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:07:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 00:07:03,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:07:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 00:07:05,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 00:07:05,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256883482] [2021-11-13 00:07:05,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256883482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 00:07:05,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1729052097] [2021-11-13 00:07:05,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 00:07:05,844 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 00:07:05,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 00:07:05,845 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 00:07:05,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-13 00:07:08,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 00:07:08,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 00:07:08,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 00:07:08,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 00:07:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 00:07:08,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 00:07:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 00:07:09,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1729052097] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 00:07:09,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241990257] [2021-11-13 00:07:09,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 00:07:09,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 00:07:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 00:07:09,428 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 00:07:09,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4798b36b-3584-4cdb-b303-e275e2cee510/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process