./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:23:28,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:23:28,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:23:28,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:23:28,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:23:28,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:23:28,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:23:28,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:23:28,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:23:28,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:23:28,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:23:28,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:23:28,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:23:28,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:23:28,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:23:28,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:23:28,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:23:28,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:23:28,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:23:28,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:23:28,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:23:28,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:23:28,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:23:28,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:23:28,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:23:28,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:23:28,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:23:28,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:23:28,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:23:28,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:23:28,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:23:28,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:23:28,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:23:28,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:23:28,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:23:28,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:23:28,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:23:28,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:23:28,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:23:28,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:23:28,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:23:28,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 12:23:28,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:23:28,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:23:28,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:23:28,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:23:28,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:23:28,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:23:28,643 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:23:28,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:23:28,644 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:23:28,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:23:28,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:23:28,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:23:28,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:23:28,646 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 12:23:28,646 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 12:23:28,647 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 12:23:28,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:23:28,648 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:23:28,648 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:23:28,649 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:23:28,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:23:28,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:23:28,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:23:28,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:23:28,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:23:28,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:23:28,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:23:28,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:23:28,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:23:28,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ec4010c0396675f743c4c0d5de68176a7292a1f0bcf6c389633f85d936d1a [2021-11-23 12:23:28,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:23:28,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:23:28,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:23:28,993 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:23:28,995 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:23:28,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/heap-manipulation/tree-2.i [2021-11-23 12:23:29,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/data/c5685c3ca/23165fd57b8a4039a281b83612daa696/FLAG3119a3ee0 [2021-11-23 12:23:29,837 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:23:29,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/sv-benchmarks/c/heap-manipulation/tree-2.i [2021-11-23 12:23:29,855 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/data/c5685c3ca/23165fd57b8a4039a281b83612daa696/FLAG3119a3ee0 [2021-11-23 12:23:30,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/data/c5685c3ca/23165fd57b8a4039a281b83612daa696 [2021-11-23 12:23:30,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:23:30,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:23:30,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:23:30,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:23:30,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:23:30,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ecdcfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30, skipping insertion in model container [2021-11-23 12:23:30,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:23:30,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:23:30,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/sv-benchmarks/c/heap-manipulation/tree-2.i[22626,22639] [2021-11-23 12:23:30,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:23:30,667 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:23:30,718 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/sv-benchmarks/c/heap-manipulation/tree-2.i[22626,22639] [2021-11-23 12:23:30,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:23:30,775 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:23:30,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30 WrapperNode [2021-11-23 12:23:30,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:23:30,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:23:30,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:23:30,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:23:30,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,847 INFO L137 Inliner]: procedures = 122, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 162 [2021-11-23 12:23:30,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:23:30,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:23:30,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:23:30,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:23:30,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:23:30,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:23:30,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:23:30,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:23:30,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (1/1) ... [2021-11-23 12:23:30,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:23:30,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:23:30,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:23:30,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:23:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:23:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:23:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:23:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:23:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:23:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:23:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:23:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:23:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:23:31,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:23:31,152 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:23:31,154 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:23:31,754 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:23:31,764 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:23:31,770 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-23 12:23:31,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:23:31 BoogieIcfgContainer [2021-11-23 12:23:31,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:23:31,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:23:31,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:23:31,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:23:31,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:23:30" (1/3) ... [2021-11-23 12:23:31,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110b765d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:23:31, skipping insertion in model container [2021-11-23 12:23:31,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:23:30" (2/3) ... [2021-11-23 12:23:31,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110b765d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:23:31, skipping insertion in model container [2021-11-23 12:23:31,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:23:31" (3/3) ... [2021-11-23 12:23:31,786 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-2.i [2021-11-23 12:23:31,793 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:23:31,793 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-11-23 12:23:31,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:23:31,887 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 [2021-11-23 12:23:31,888 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-11-23 12:23:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 146 states have internal predecessors, (173), 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) [2021-11-23 12:23:31,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 12:23:31,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:31,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 12:23:31,920 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:31,927 INFO L85 PathProgramCache]: Analyzing trace with hash 28728743, now seen corresponding path program 1 times [2021-11-23 12:23:31,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:31,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367384540] [2021-11-23 12:23:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:31,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:32,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:32,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367384540] [2021-11-23 12:23:32,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367384540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:32,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:32,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:23:32,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800933569] [2021-11-23 12:23:32,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:32,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:23:32,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:23:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:23:32,142 INFO L87 Difference]: Start difference. First operand has 147 states, 81 states have (on average 2.1358024691358026) internal successors, (173), 146 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-23 12:23:32,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:32,169 INFO L93 Difference]: Finished difference Result 144 states and 153 transitions. [2021-11-23 12:23:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:23:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-23 12:23:32,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:32,184 INFO L225 Difference]: With dead ends: 144 [2021-11-23 12:23:32,184 INFO L226 Difference]: Without dead ends: 142 [2021-11-23 12:23:32,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:23:32,192 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:32,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:23:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-23 12:23:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-11-23 12:23:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 77 states have (on average 1.9610389610389611) internal successors, (151), 141 states have internal predecessors, (151), 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) [2021-11-23 12:23:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2021-11-23 12:23:32,246 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 5 [2021-11-23 12:23:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:32,246 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2021-11-23 12:23:32,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-23 12:23:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2021-11-23 12:23:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:23:32,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:32,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:23:32,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:23:32,248 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash 889570440, now seen corresponding path program 1 times [2021-11-23 12:23:32,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:32,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738709409] [2021-11-23 12:23:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:32,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:32,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:32,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738709409] [2021-11-23 12:23:32,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738709409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:32,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:32,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:23:32,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872123733] [2021-11-23 12:23:32,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:32,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:23:32,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:32,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:23:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:32,328 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:32,467 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2021-11-23 12:23:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:23:32,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 12:23:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:32,479 INFO L225 Difference]: With dead ends: 145 [2021-11-23 12:23:32,480 INFO L226 Difference]: Without dead ends: 145 [2021-11-23 12:23:32,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:32,485 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 91 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:32,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 174 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:23:32,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-23 12:23:32,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-23 12:23:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 80 states have (on average 1.9375) internal successors, (155), 144 states have internal predecessors, (155), 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) [2021-11-23 12:23:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2021-11-23 12:23:32,505 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 6 [2021-11-23 12:23:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:32,505 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2021-11-23 12:23:32,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2021-11-23 12:23:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:23:32,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:32,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:23:32,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:23:32,507 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:32,509 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2021-11-23 12:23:32,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:32,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051346207] [2021-11-23 12:23:32,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:32,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:32,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:32,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051346207] [2021-11-23 12:23:32,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051346207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:32,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:32,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:23:32,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083838714] [2021-11-23 12:23:32,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:32,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:23:32,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:32,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:23:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:32,581 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:32,789 INFO L93 Difference]: Finished difference Result 223 states and 240 transitions. [2021-11-23 12:23:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:23:32,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 12:23:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:32,794 INFO L225 Difference]: With dead ends: 223 [2021-11-23 12:23:32,795 INFO L226 Difference]: Without dead ends: 223 [2021-11-23 12:23:32,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:32,804 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 132 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:32,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 232 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:23:32,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-23 12:23:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 139. [2021-11-23 12:23:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 82 states have (on average 1.8414634146341464) internal successors, (151), 138 states have internal predecessors, (151), 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) [2021-11-23 12:23:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 151 transitions. [2021-11-23 12:23:32,841 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 151 transitions. Word has length 6 [2021-11-23 12:23:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:32,841 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 151 transitions. [2021-11-23 12:23:32,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 151 transitions. [2021-11-23 12:23:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:23:32,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:32,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:23:32,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:23:32,846 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:32,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash 889571340, now seen corresponding path program 1 times [2021-11-23 12:23:32,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:32,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413230187] [2021-11-23 12:23:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:32,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:32,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413230187] [2021-11-23 12:23:32,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413230187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:32,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:32,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:23:32,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577256964] [2021-11-23 12:23:32,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:32,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:23:32,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:32,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:23:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:32,967 INFO L87 Difference]: Start difference. First operand 139 states and 151 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:33,195 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2021-11-23 12:23:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:23:33,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 12:23:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:33,199 INFO L225 Difference]: With dead ends: 244 [2021-11-23 12:23:33,201 INFO L226 Difference]: Without dead ends: 244 [2021-11-23 12:23:33,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:33,207 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 127 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:33,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 262 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:23:33,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-23 12:23:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 151. [2021-11-23 12:23:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 97 states have (on average 1.7525773195876289) internal successors, (170), 150 states have internal predecessors, (170), 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) [2021-11-23 12:23:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 170 transitions. [2021-11-23 12:23:33,234 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 170 transitions. Word has length 6 [2021-11-23 12:23:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:33,235 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 170 transitions. [2021-11-23 12:23:33,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 170 transitions. [2021-11-23 12:23:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:23:33,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:33,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:23:33,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:23:33,238 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:33,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1244322083, now seen corresponding path program 1 times [2021-11-23 12:23:33,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:33,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358745421] [2021-11-23 12:23:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:33,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:33,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:33,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358745421] [2021-11-23 12:23:33,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358745421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:33,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:33,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:23:33,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754930769] [2021-11-23 12:23:33,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:33,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:23:33,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:33,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:23:33,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:33,326 INFO L87 Difference]: Start difference. First operand 151 states and 170 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:33,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:33,451 INFO L93 Difference]: Finished difference Result 233 states and 258 transitions. [2021-11-23 12:23:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:23:33,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:23:33,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:33,455 INFO L225 Difference]: With dead ends: 233 [2021-11-23 12:23:33,456 INFO L226 Difference]: Without dead ends: 232 [2021-11-23 12:23:33,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:33,457 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 82 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:33,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 194 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:23:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-23 12:23:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 154. [2021-11-23 12:23:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 100 states have (on average 1.73) internal successors, (173), 153 states have internal predecessors, (173), 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) [2021-11-23 12:23:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 173 transitions. [2021-11-23 12:23:33,493 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 173 transitions. Word has length 9 [2021-11-23 12:23:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:33,495 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 173 transitions. [2021-11-23 12:23:33,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 173 transitions. [2021-11-23 12:23:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:23:33,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:33,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:23:33,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:23:33,501 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:33,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1271536046, now seen corresponding path program 1 times [2021-11-23 12:23:33,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:33,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995356828] [2021-11-23 12:23:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:33,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:33,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:33,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995356828] [2021-11-23 12:23:33,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995356828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:33,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:33,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:23:33,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068187498] [2021-11-23 12:23:33,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:33,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:23:33,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:33,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:23:33,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:33,574 INFO L87 Difference]: Start difference. First operand 154 states and 173 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:33,598 INFO L93 Difference]: Finished difference Result 242 states and 266 transitions. [2021-11-23 12:23:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:23:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:23:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:33,601 INFO L225 Difference]: With dead ends: 242 [2021-11-23 12:23:33,601 INFO L226 Difference]: Without dead ends: 242 [2021-11-23 12:23:33,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:33,602 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 94 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:33,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:23:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-23 12:23:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 158. [2021-11-23 12:23:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 157 states have internal predecessors, (177), 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) [2021-11-23 12:23:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2021-11-23 12:23:33,612 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 177 transitions. Word has length 9 [2021-11-23 12:23:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:33,612 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 177 transitions. [2021-11-23 12:23:33,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 177 transitions. [2021-11-23 12:23:33,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:23:33,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:33,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:23:33,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:23:33,614 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:33,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:33,615 INFO L85 PathProgramCache]: Analyzing trace with hash -80724515, now seen corresponding path program 1 times [2021-11-23 12:23:33,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:33,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37494737] [2021-11-23 12:23:33,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:33,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:33,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:33,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37494737] [2021-11-23 12:23:33,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37494737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:33,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:33,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:23:33,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659718865] [2021-11-23 12:23:33,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:33,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:23:33,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:23:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:23:33,695 INFO L87 Difference]: Start difference. First operand 158 states and 177 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-23 12:23:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:33,767 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2021-11-23 12:23:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:23:33,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 12:23:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:33,770 INFO L225 Difference]: With dead ends: 163 [2021-11-23 12:23:33,770 INFO L226 Difference]: Without dead ends: 159 [2021-11-23 12:23:33,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:23:33,772 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 11 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:33,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 534 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:23:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-23 12:23:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 154. [2021-11-23 12:23:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 100 states have (on average 1.72) internal successors, (172), 153 states have internal predecessors, (172), 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) [2021-11-23 12:23:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2021-11-23 12:23:33,780 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 10 [2021-11-23 12:23:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:33,781 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2021-11-23 12:23:33,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-11-23 12:23:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2021-11-23 12:23:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:23:33,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:33,784 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:23:33,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:23:33,784 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1916436981, now seen corresponding path program 1 times [2021-11-23 12:23:33,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:33,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885303398] [2021-11-23 12:23:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:33,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:33,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:33,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885303398] [2021-11-23 12:23:33,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885303398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:33,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:33,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:23:33,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487353955] [2021-11-23 12:23:33,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:33,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:23:33,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:33,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:23:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:33,898 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-23 12:23:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:33,957 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2021-11-23 12:23:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:23:33,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 [2021-11-23 12:23:33,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:33,960 INFO L225 Difference]: With dead ends: 163 [2021-11-23 12:23:33,960 INFO L226 Difference]: Without dead ends: 163 [2021-11-23 12:23:33,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:23:33,961 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 29 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:33,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 235 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:23:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-23 12:23:33,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 154. [2021-11-23 12:23:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 100 states have (on average 1.71) internal successors, (171), 153 states have internal predecessors, (171), 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) [2021-11-23 12:23:33,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2021-11-23 12:23:33,972 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 18 [2021-11-23 12:23:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:33,973 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2021-11-23 12:23:33,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-23 12:23:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2021-11-23 12:23:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:23:33,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:33,975 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:23:33,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:23:33,978 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1943650944, now seen corresponding path program 1 times [2021-11-23 12:23:33,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:33,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929204418] [2021-11-23 12:23:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:33,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:34,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:34,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929204418] [2021-11-23 12:23:34,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929204418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:23:34,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126665173] [2021-11-23 12:23:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:34,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:23:34,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:23:34,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:23:34,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:23:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:34,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:23:34,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:23:34,384 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 [2021-11-23 12:23:34,473 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 12:23:34,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 12:23:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:34,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:23:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:34,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126665173] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:23:34,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:23:34,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 12:23:34,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592563638] [2021-11-23 12:23:34,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:23:34,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:23:34,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:34,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:23:34,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:23:34,928 INFO L87 Difference]: Start difference. First operand 154 states and 171 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:35,086 INFO L93 Difference]: Finished difference Result 209 states and 231 transitions. [2021-11-23 12:23:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:23:35,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 12:23:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:35,089 INFO L225 Difference]: With dead ends: 209 [2021-11-23 12:23:35,090 INFO L226 Difference]: Without dead ends: 209 [2021-11-23 12:23:35,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:23:35,094 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 260 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:35,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 290 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 83 Invalid, 0 Unknown, 151 Unchecked, 0.1s Time] [2021-11-23 12:23:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-23 12:23:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 164. [2021-11-23 12:23:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 110 states have (on average 1.6727272727272726) internal successors, (184), 163 states have internal predecessors, (184), 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) [2021-11-23 12:23:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 184 transitions. [2021-11-23 12:23:35,103 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 184 transitions. Word has length 18 [2021-11-23 12:23:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:35,103 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 184 transitions. [2021-11-23 12:23:35,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 184 transitions. [2021-11-23 12:23:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:23:35,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:35,105 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:23:35,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:23:35,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:23:35,330 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1943650945, now seen corresponding path program 1 times [2021-11-23 12:23:35,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:35,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911629242] [2021-11-23 12:23:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:35,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:35,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:35,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911629242] [2021-11-23 12:23:35,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911629242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:23:35,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606718462] [2021-11-23 12:23:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:35,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:23:35,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:23:35,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:23:35,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:23:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:35,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 12:23:35,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:23:35,597 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 [2021-11-23 12:23:35,605 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 [2021-11-23 12:23:35,782 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 12:23:35,783 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 22 treesize of output 24 [2021-11-23 12:23:35,800 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 12:23:35,800 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 21 treesize of output 21 [2021-11-23 12:23:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:35,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:23:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:36,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606718462] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:23:36,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:23:36,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2021-11-23 12:23:36,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231901902] [2021-11-23 12:23:36,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:23:36,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:23:36,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:36,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:23:36,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:23:36,350 INFO L87 Difference]: Start difference. First operand 164 states and 184 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 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) [2021-11-23 12:23:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:36,834 INFO L93 Difference]: Finished difference Result 350 states and 378 transitions. [2021-11-23 12:23:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:23:36,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 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 [2021-11-23 12:23:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:36,838 INFO L225 Difference]: With dead ends: 350 [2021-11-23 12:23:36,838 INFO L226 Difference]: Without dead ends: 350 [2021-11-23 12:23:36,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:23:36,839 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 252 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:36,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 508 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 0 Unknown, 354 Unchecked, 0.4s Time] [2021-11-23 12:23:36,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-23 12:23:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 164. [2021-11-23 12:23:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 110 states have (on average 1.6636363636363636) internal successors, (183), 163 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2021-11-23 12:23:36,851 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 18 [2021-11-23 12:23:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:36,856 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2021-11-23 12:23:36,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 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) [2021-11-23 12:23:36,856 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2021-11-23 12:23:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 12:23:36,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:36,858 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:23:36,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 12:23:37,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 12:23:37,082 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:37,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash -705653922, now seen corresponding path program 1 times [2021-11-23 12:23:37,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:37,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680207401] [2021-11-23 12:23:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:37,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:23:37,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:37,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680207401] [2021-11-23 12:23:37,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680207401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:37,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:37,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:23:37,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346922912] [2021-11-23 12:23:37,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:37,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:23:37,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:37,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:23:37,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:23:37,135 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-23 12:23:37,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:37,316 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2021-11-23 12:23:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:23:37,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 19 [2021-11-23 12:23:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:37,319 INFO L225 Difference]: With dead ends: 163 [2021-11-23 12:23:37,319 INFO L226 Difference]: Without dead ends: 163 [2021-11-23 12:23:37,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:23:37,320 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 7 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:37,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 365 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:23:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-23 12:23:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-23 12:23:37,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 110 states have (on average 1.6454545454545455) internal successors, (181), 162 states have internal predecessors, (181), 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) [2021-11-23 12:23:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 181 transitions. [2021-11-23 12:23:37,326 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 181 transitions. Word has length 19 [2021-11-23 12:23:37,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:37,327 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 181 transitions. [2021-11-23 12:23:37,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-23 12:23:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 181 transitions. [2021-11-23 12:23:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 12:23:37,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:37,328 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:23:37,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:23:37,329 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:37,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:37,330 INFO L85 PathProgramCache]: Analyzing trace with hash -705653921, now seen corresponding path program 1 times [2021-11-23 12:23:37,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:37,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169316861] [2021-11-23 12:23:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:37,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:23:37,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:37,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169316861] [2021-11-23 12:23:37,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169316861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:37,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:37,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:23:37,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018130197] [2021-11-23 12:23:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:37,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:23:37,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:23:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:23:37,400 INFO L87 Difference]: Start difference. First operand 163 states and 181 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-23 12:23:37,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:37,591 INFO L93 Difference]: Finished difference Result 162 states and 179 transitions. [2021-11-23 12:23:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:23:37,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 19 [2021-11-23 12:23:37,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:37,594 INFO L225 Difference]: With dead ends: 162 [2021-11-23 12:23:37,594 INFO L226 Difference]: Without dead ends: 162 [2021-11-23 12:23:37,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:23:37,595 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 5 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:37,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 378 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:23:37,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-23 12:23:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-23 12:23:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 110 states have (on average 1.6272727272727272) internal successors, (179), 161 states have internal predecessors, (179), 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) [2021-11-23 12:23:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 179 transitions. [2021-11-23 12:23:37,601 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 179 transitions. Word has length 19 [2021-11-23 12:23:37,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:37,602 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 179 transitions. [2021-11-23 12:23:37,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-23 12:23:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 179 transitions. [2021-11-23 12:23:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 12:23:37,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:37,603 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] [2021-11-23 12:23:37,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:23:37,604 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1728959401, now seen corresponding path program 1 times [2021-11-23 12:23:37,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:37,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40497418] [2021-11-23 12:23:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:37,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:37,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:37,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40497418] [2021-11-23 12:23:37,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40497418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:37,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:37,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:23:37,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95734661] [2021-11-23 12:23:37,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:37,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:23:37,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:23:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:23:37,735 INFO L87 Difference]: Start difference. First operand 162 states and 179 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-11-23 12:23:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:38,089 INFO L93 Difference]: Finished difference Result 163 states and 178 transitions. [2021-11-23 12:23:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:23:38,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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 22 [2021-11-23 12:23:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:38,092 INFO L225 Difference]: With dead ends: 163 [2021-11-23 12:23:38,092 INFO L226 Difference]: Without dead ends: 163 [2021-11-23 12:23:38,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:23:38,093 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 49 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:38,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 464 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:23:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-23 12:23:38,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-11-23 12:23:38,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 110 states have (on average 1.6181818181818182) internal successors, (178), 161 states have internal predecessors, (178), 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) [2021-11-23 12:23:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2021-11-23 12:23:38,099 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 22 [2021-11-23 12:23:38,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:38,099 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2021-11-23 12:23:38,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-11-23 12:23:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2021-11-23 12:23:38,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 12:23:38,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:38,101 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] [2021-11-23 12:23:38,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:23:38,101 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:38,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1728959402, now seen corresponding path program 1 times [2021-11-23 12:23:38,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:38,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748528613] [2021-11-23 12:23:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:38,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:38,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:38,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748528613] [2021-11-23 12:23:38,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748528613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:38,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:38,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:23:38,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914117778] [2021-11-23 12:23:38,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:38,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:23:38,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:38,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:23:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:23:38,250 INFO L87 Difference]: Start difference. First operand 162 states and 178 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-11-23 12:23:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:38,650 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2021-11-23 12:23:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:23:38,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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 22 [2021-11-23 12:23:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:38,656 INFO L225 Difference]: With dead ends: 162 [2021-11-23 12:23:38,656 INFO L226 Difference]: Without dead ends: 162 [2021-11-23 12:23:38,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:23:38,657 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 44 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:38,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 482 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:23:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-23 12:23:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-23 12:23:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 110 states have (on average 1.6090909090909091) internal successors, (177), 161 states have internal predecessors, (177), 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) [2021-11-23 12:23:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2021-11-23 12:23:38,664 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 22 [2021-11-23 12:23:38,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:38,665 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2021-11-23 12:23:38,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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) [2021-11-23 12:23:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2021-11-23 12:23:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 12:23:38,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:38,666 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] [2021-11-23 12:23:38,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:23:38,667 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:38,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2113223003, now seen corresponding path program 1 times [2021-11-23 12:23:38,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:38,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313197880] [2021-11-23 12:23:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:38,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:38,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:38,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313197880] [2021-11-23 12:23:38,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313197880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:38,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:38,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:23:38,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458570798] [2021-11-23 12:23:38,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:38,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:23:38,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:38,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:23:38,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:23:38,802 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:39,111 INFO L93 Difference]: Finished difference Result 163 states and 176 transitions. [2021-11-23 12:23:39,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 12:23:39,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 12:23:39,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:39,113 INFO L225 Difference]: With dead ends: 163 [2021-11-23 12:23:39,114 INFO L226 Difference]: Without dead ends: 163 [2021-11-23 12:23:39,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:23:39,115 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 54 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:39,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 396 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:23:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-23 12:23:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-11-23 12:23:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 110 states have (on average 1.6) internal successors, (176), 161 states have internal predecessors, (176), 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) [2021-11-23 12:23:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 176 transitions. [2021-11-23 12:23:39,136 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 176 transitions. Word has length 25 [2021-11-23 12:23:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:39,136 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 176 transitions. [2021-11-23 12:23:39,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 176 transitions. [2021-11-23 12:23:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 12:23:39,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:39,138 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] [2021-11-23 12:23:39,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:23:39,138 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:39,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2113223002, now seen corresponding path program 1 times [2021-11-23 12:23:39,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:39,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782204762] [2021-11-23 12:23:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:39,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:39,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:39,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782204762] [2021-11-23 12:23:39,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782204762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:39,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:39,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:23:39,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704562637] [2021-11-23 12:23:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:39,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:23:39,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:39,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:23:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:23:39,324 INFO L87 Difference]: Start difference. First operand 162 states and 176 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:39,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:39,748 INFO L93 Difference]: Finished difference Result 162 states and 175 transitions. [2021-11-23 12:23:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 12:23:39,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 12:23:39,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:39,750 INFO L225 Difference]: With dead ends: 162 [2021-11-23 12:23:39,750 INFO L226 Difference]: Without dead ends: 162 [2021-11-23 12:23:39,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:23:39,752 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 48 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:39,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 485 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:23:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-23 12:23:39,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-23 12:23:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 110 states have (on average 1.5909090909090908) internal successors, (175), 161 states have internal predecessors, (175), 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) [2021-11-23 12:23:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 175 transitions. [2021-11-23 12:23:39,757 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 175 transitions. Word has length 25 [2021-11-23 12:23:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:39,759 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 175 transitions. [2021-11-23 12:23:39,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 175 transitions. [2021-11-23 12:23:39,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 12:23:39,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:39,764 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] [2021-11-23 12:23:39,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:23:39,764 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:39,765 INFO L85 PathProgramCache]: Analyzing trace with hash 604192080, now seen corresponding path program 1 times [2021-11-23 12:23:39,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:39,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953477622] [2021-11-23 12:23:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:39,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:39,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:39,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953477622] [2021-11-23 12:23:39,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953477622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:39,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:39,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:23:39,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610231505] [2021-11-23 12:23:39,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:39,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:23:39,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:39,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:23:39,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:23:39,963 INFO L87 Difference]: Start difference. First operand 162 states and 175 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:40,364 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2021-11-23 12:23:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:23:40,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 12:23:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:40,366 INFO L225 Difference]: With dead ends: 164 [2021-11-23 12:23:40,366 INFO L226 Difference]: Without dead ends: 164 [2021-11-23 12:23:40,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-11-23 12:23:40,368 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 63 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:40,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 403 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:23:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-23 12:23:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2021-11-23 12:23:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 110 states have (on average 1.5818181818181818) internal successors, (174), 161 states have internal predecessors, (174), 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) [2021-11-23 12:23:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 174 transitions. [2021-11-23 12:23:40,375 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 174 transitions. Word has length 28 [2021-11-23 12:23:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:40,376 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 174 transitions. [2021-11-23 12:23:40,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 174 transitions. [2021-11-23 12:23:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 12:23:40,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:40,377 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] [2021-11-23 12:23:40,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:23:40,378 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:40,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:40,378 INFO L85 PathProgramCache]: Analyzing trace with hash 604192081, now seen corresponding path program 1 times [2021-11-23 12:23:40,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:40,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788754459] [2021-11-23 12:23:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:40,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:40,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:40,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788754459] [2021-11-23 12:23:40,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788754459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:23:40,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:23:40,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:23:40,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84170599] [2021-11-23 12:23:40,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:23:40,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:23:40,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:40,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:23:40,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:23:40,688 INFO L87 Difference]: Start difference. First operand 162 states and 174 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:41,152 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2021-11-23 12:23:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 12:23:41,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 12:23:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:41,154 INFO L225 Difference]: With dead ends: 162 [2021-11-23 12:23:41,154 INFO L226 Difference]: Without dead ends: 162 [2021-11-23 12:23:41,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:23:41,156 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 52 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:41,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 490 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:23:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-23 12:23:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-23 12:23:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 110 states have (on average 1.5727272727272728) internal successors, (173), 161 states have internal predecessors, (173), 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) [2021-11-23 12:23:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-11-23 12:23:41,164 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 28 [2021-11-23 12:23:41,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:41,166 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-11-23 12:23:41,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:23:41,166 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-11-23 12:23:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 12:23:41,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:41,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 12:23:41,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:23:41,168 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:41,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:41,168 INFO L85 PathProgramCache]: Analyzing trace with hash 264968939, now seen corresponding path program 1 times [2021-11-23 12:23:41,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:41,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969220830] [2021-11-23 12:23:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:41,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:23:41,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:41,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969220830] [2021-11-23 12:23:41,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969220830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:23:41,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574453845] [2021-11-23 12:23:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:41,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:23:41,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:23:41,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:23:41,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:23:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:41,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:23:41,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:23:41,395 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 [2021-11-23 12:23:41,457 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 12:23:41,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 12:23:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:23:41,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:23:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:23:41,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574453845] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:23:41,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:23:41,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 12:23:41,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501347197] [2021-11-23 12:23:41,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:23:41,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:23:41,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:23:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:23:41,721 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 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) [2021-11-23 12:23:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:41,894 INFO L93 Difference]: Finished difference Result 201 states and 214 transitions. [2021-11-23 12:23:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:23:41,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 12:23:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:41,896 INFO L225 Difference]: With dead ends: 201 [2021-11-23 12:23:41,897 INFO L226 Difference]: Without dead ends: 201 [2021-11-23 12:23:41,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:23:41,898 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 151 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:41,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 350 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 170 Unchecked, 0.1s Time] [2021-11-23 12:23:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-23 12:23:41,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 161. [2021-11-23 12:23:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 110 states have (on average 1.5636363636363637) internal successors, (172), 160 states have internal predecessors, (172), 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) [2021-11-23 12:23:41,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 172 transitions. [2021-11-23 12:23:41,904 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 172 transitions. Word has length 28 [2021-11-23 12:23:41,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:41,904 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 172 transitions. [2021-11-23 12:23:41,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 8 states have internal predecessors, (46), 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) [2021-11-23 12:23:41,905 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 172 transitions. [2021-11-23 12:23:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 12:23:41,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:41,905 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 12:23:41,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:23:42,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:23:42,118 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:42,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 264968940, now seen corresponding path program 1 times [2021-11-23 12:23:42,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:42,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789840195] [2021-11-23 12:23:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:42,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:23:42,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:42,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789840195] [2021-11-23 12:23:42,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789840195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:23:42,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769273129] [2021-11-23 12:23:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:42,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:23:42,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:23:42,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:23:42,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:23:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:42,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 12:23:42,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:23:42,316 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 [2021-11-23 12:23:42,321 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 [2021-11-23 12:23:42,436 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 12:23:42,436 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 22 treesize of output 24 [2021-11-23 12:23:42,445 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 12:23:42,446 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 21 treesize of output 21 [2021-11-23 12:23:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:23:42,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:23:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 12:23:42,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769273129] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:23:42,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:23:42,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2021-11-23 12:23:42,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394038965] [2021-11-23 12:23:42,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:23:42,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:23:42,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:23:42,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:23:42,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:23:42,892 INFO L87 Difference]: Start difference. First operand 161 states and 172 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 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) [2021-11-23 12:23:43,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:23:43,227 INFO L93 Difference]: Finished difference Result 204 states and 217 transitions. [2021-11-23 12:23:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:23:43,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 12:23:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:23:43,230 INFO L225 Difference]: With dead ends: 204 [2021-11-23 12:23:43,230 INFO L226 Difference]: Without dead ends: 204 [2021-11-23 12:23:43,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:23:43,231 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 208 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:23:43,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 334 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 259 Invalid, 0 Unknown, 215 Unchecked, 0.3s Time] [2021-11-23 12:23:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-23 12:23:43,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 150. [2021-11-23 12:23:43,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 100 states have (on average 1.59) internal successors, (159), 149 states have internal predecessors, (159), 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) [2021-11-23 12:23:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2021-11-23 12:23:43,239 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 28 [2021-11-23 12:23:43,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:23:43,239 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2021-11-23 12:23:43,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 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) [2021-11-23 12:23:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2021-11-23 12:23:43,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 12:23:43,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:23:43,241 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:23:43,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:23:43,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:23:43,442 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 61 more)] === [2021-11-23 12:23:43,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:23:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1992485555, now seen corresponding path program 1 times [2021-11-23 12:23:43,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:23:43,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888718816] [2021-11-23 12:23:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:43,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:23:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:43,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:23:43,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888718816] [2021-11-23 12:23:43,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888718816] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:23:43,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777792715] [2021-11-23 12:23:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:23:43,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:23:43,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:23:43,834 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:23:43,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05a5dc5b-6239-441a-84b6-6115ba5b272d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 12:23:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:23:43,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-23 12:23:43,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:23:43,950 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 [2021-11-23 12:23:43,984 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 [2021-11-23 12:23:43,992 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 [2021-11-23 12:23:44,032 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 12:23:44,032 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 1 case distinctions, treesize of input 29 treesize of output 13 [2021-11-23 12:23:44,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:23:44,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-23 12:23:44,105 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 12:23:44,106 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 11 treesize of output 11 [2021-11-23 12:23:44,129 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 0 case distinctions, treesize of input 24 treesize of output 19 [2021-11-23 12:23:44,141 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-23 12:23:44,146 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 33 treesize of output 37 [2021-11-23 12:23:44,161 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 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-23 12:23:44,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:23:44,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:23:44,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2021-11-23 12:23:44,265 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-23 12:23:44,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 54 [2021-11-23 12:23:44,281 INFO L354 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2021-11-23 12:23:44,281 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 1 case distinctions, treesize of input 57 treesize of output 52 [2021-11-23 12:23:44,508 INFO L354 Elim1Store]: treesize reduction 118, result has 16.9 percent of original size [2021-11-23 12:23:44,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 75 [2021-11-23 12:23:44,539 INFO L354 Elim1Store]: treesize reduction 84, result has 20.0 percent of original size [2021-11-23 12:23:44,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 81 [2021-11-23 12:23:50,871 INFO L354 Elim1Store]: treesize reduction 140, result has 18.6 percent of original size [2021-11-23 12:23:50,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 97 [2021-11-23 12:23:50,905 INFO L354 Elim1Store]: treesize reduction 106, result has 21.5 percent of original size [2021-11-23 12:23:50,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 71 [2021-11-23 12:23:51,019 INFO L354 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2021-11-23 12:23:51,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 58 [2021-11-23 12:23:51,034 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 12:23:51,035 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 1 case distinctions, treesize of input 61 treesize of output 56 [2021-11-23 12:23:51,143 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-23 12:23:51,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 44 [2021-11-23 12:23:51,150 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 12:23:51,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 19 [2021-11-23 12:23:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:23:51,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:23:52,249 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_tree_#t~mem15#1.offset| Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_tree_#t~mem15#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_tree_#t~mem15#1.base|) (+ |ULTIMATE.start_create_tree_#t~mem15#1.offset| 8) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0)) (forall ((|ULTIMATE.start_create_tree_#t~mem15#1.offset| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_#t~mem15#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_#t~mem15#1.base|) (+ |ULTIMATE.start_create_tree_#t~mem15#1.offset| 8) |c_ULTIMATE.start_create_tree_~node~0#1.base|)) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0))) is different from false [2021-11-23 12:24:03,913 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_tree_#t~mem14#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem15#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse2 (+ |ULTIMATE.start_create_tree_#t~mem14#1.offset| 12))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_tree_#t~mem14#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_tree_#t~mem14#1.base|) .cse2 v_DerPreprocessor_1))) (.cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_#t~mem14#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_#t~mem14#1.base|) .cse2 v_DerPreprocessor_2)) |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_create_tree_#t~mem15#1.offset| 8) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0)) (forall ((|ULTIMATE.start_create_tree_#t~mem14#1.offset| Int) (v_prenex_1 Int) (v_DerPreprocessor_2 Int)) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_#t~mem14#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_#t~mem14#1.base|) (+ |ULTIMATE.start_create_tree_#t~mem14#1.offset| 12) v_DerPreprocessor_2)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse3 .cse4 (store (select .cse3 .cse4) (+ v_prenex_1 8) |c_ULTIMATE.start_create_tree_~node~0#1.base|)))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0))) is different from false [2021-11-23 12:24:05,936 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_tree_#t~mem14#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem15#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) (.cse3 (+ |ULTIMATE.start_create_tree_#t~mem14#1.offset| 12))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 v_DerPreprocessor_1))) (.cse1 (select (select (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 v_DerPreprocessor_2)) |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_create_tree_#t~mem15#1.offset| 8) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0)) (forall ((|ULTIMATE.start_create_tree_#t~mem14#1.offset| Int) (v_prenex_1 Int) (v_DerPreprocessor_2 Int)) (= (select (select (let ((.cse4 (let ((.cse6 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse6 (store (select |c_#memory_$Pointer$.base| .cse6) (+ |ULTIMATE.start_create_tree_#t~mem14#1.offset| 12) v_DerPreprocessor_2))))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse4 .cse5 (store (select .cse4 .cse5) (+ v_prenex_1 8) |c_ULTIMATE.start_create_tree_~node~0#1.base|)))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0))) is different from false [2021-11-23 12:24:42,203 WARN L227 SmtUtils]: Spent 7.49s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:25:09,602 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:25:52,695 WARN L227 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:26:27,234 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_tree_#t~mem12#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem14#1.offset| Int) (v_prenex_1 Int) (|ULTIMATE.start_create_tree_#t~mem13#1.offset| Int) (v_DerPreprocessor_2 Int)) (= (select (select (let ((.cse0 (let ((.cse2 (let ((.cse4 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset| |c_ULTIMATE.start_create_tree_#t~malloc11#1.base|)))) (store .cse6 |c_ULTIMATE.start_create_tree_#t~malloc11#1.base| (store (select .cse6 |c_ULTIMATE.start_create_tree_#t~malloc11#1.base|) |ULTIMATE.start_create_tree_#t~mem12#1.offset| 0))))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse4 .cse5 (store (select .cse4 .cse5) (+ |ULTIMATE.start_create_tree_#t~mem13#1.offset| 4) 0)))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse2 .cse3 (store (select .cse2 .cse3) (+ |ULTIMATE.start_create_tree_#t~mem14#1.offset| 12) v_DerPreprocessor_2)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ v_prenex_1 8) |c_ULTIMATE.start_create_tree_~node~0#1.base|)))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0)) (forall ((|ULTIMATE.start_create_tree_#t~mem12#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem14#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem15#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem13#1.offset| Int) (|ULTIMATE.start_create_tree_#t~malloc11#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse17 (let ((.cse18 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset| |c_ULTIMATE.start_create_tree_#t~malloc11#1.base|)))) (store .cse18 |c_ULTIMATE.start_create_tree_#t~malloc11#1.base| (store (select .cse18 |c_ULTIMATE.start_create_tree_#t~malloc11#1.base|) |ULTIMATE.start_create_tree_#t~mem12#1.offset| 0))))) (let ((.cse14 (select (select .cse17 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) (.cse15 (+ |ULTIMATE.start_create_tree_#t~mem13#1.offset| 4))) (let ((.cse9 (store .cse17 .cse14 (store (select .cse17 .cse14) .cse15 0)))) (let ((.cse10 (select (select .cse9 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) (.cse11 (+ |ULTIMATE.start_create_tree_#t~mem14#1.offset| 12))) (let ((.cse7 (let ((.cse12 (let ((.cse13 (let ((.cse16 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_tree_~node~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset| |ULTIMATE.start_create_tree_#t~malloc11#1.offset|)))) (store .cse16 |c_ULTIMATE.start_create_tree_#t~malloc11#1.base| (store (select .cse16 |c_ULTIMATE.start_create_tree_#t~malloc11#1.base|) |ULTIMATE.start_create_tree_#t~mem12#1.offset| 0))))) (store .cse13 .cse14 (store (select .cse13 .cse14) .cse15 0))))) (store .cse12 .cse10 (store (select .cse12 .cse10) .cse11 v_DerPreprocessor_1)))) (.cse8 (select (select (store .cse9 .cse10 (store (select .cse9 .cse10) .cse11 v_DerPreprocessor_2)) |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse7 .cse8 (store (select .cse7 .cse8) (+ |ULTIMATE.start_create_tree_#t~mem15#1.offset| 8) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))))))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0))) is different from false [2021-11-23 12:26:29,407 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7| Int)) (or (and (forall ((|ULTIMATE.start_create_tree_#t~mem12#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem14#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem15#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem13#1.offset| Int) (|ULTIMATE.start_create_tree_#t~malloc11#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset| |v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7|)))) (store .cse11 |v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7| (store (select .cse11 |v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7|) |ULTIMATE.start_create_tree_#t~mem12#1.offset| 0))))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) (.cse8 (+ |ULTIMATE.start_create_tree_#t~mem13#1.offset| 4))) (let ((.cse2 (store .cse10 .cse7 (store (select .cse10 .cse7) .cse8 0)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) (.cse4 (+ |ULTIMATE.start_create_tree_#t~mem14#1.offset| 12))) (let ((.cse0 (let ((.cse5 (let ((.cse6 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_tree_~node~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset| |ULTIMATE.start_create_tree_#t~malloc11#1.offset|)))) (store .cse9 |v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7| (store (select .cse9 |v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7|) |ULTIMATE.start_create_tree_#t~mem12#1.offset| 0))))) (store .cse6 .cse7 (store (select .cse6 .cse7) .cse8 0))))) (store .cse5 .cse3 (store (select .cse5 .cse3) .cse4 v_DerPreprocessor_1)))) (.cse1 (select (select (store .cse2 .cse3 (store (select .cse2 .cse3) .cse4 v_DerPreprocessor_2)) |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |ULTIMATE.start_create_tree_#t~mem15#1.offset| 8) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))))))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0)) (forall ((|ULTIMATE.start_create_tree_#t~mem12#1.offset| Int) (|ULTIMATE.start_create_tree_#t~mem14#1.offset| Int) (v_prenex_1 Int) (|ULTIMATE.start_create_tree_#t~mem13#1.offset| Int) (v_DerPreprocessor_2 Int)) (= (select (select (let ((.cse12 (let ((.cse14 (let ((.cse16 (let ((.cse18 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset| |v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7|)))) (store .cse18 |v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7| (store (select .cse18 |v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7|) |ULTIMATE.start_create_tree_#t~mem12#1.offset| 0))))) (let ((.cse17 (select (select .cse16 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse16 .cse17 (store (select .cse16 .cse17) (+ |ULTIMATE.start_create_tree_#t~mem13#1.offset| 4) 0)))))) (let ((.cse15 (select (select .cse14 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse14 .cse15 (store (select .cse14 .cse15) (+ |ULTIMATE.start_create_tree_#t~mem14#1.offset| 12) v_DerPreprocessor_2)))))) (let ((.cse13 (select (select .cse12 |c_ULTIMATE.start_create_tree_~node~0#1.base|) |c_ULTIMATE.start_create_tree_~node~0#1.offset|))) (store .cse12 .cse13 (store (select .cse12 .cse13) (+ v_prenex_1 8) |c_ULTIMATE.start_create_tree_~node~0#1.base|)))) |c_ULTIMATE.start_create_tree_~node~0#1.base|) (+ 4 |c_ULTIMATE.start_create_tree_~node~0#1.offset|)) 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_tree_#t~malloc11#1.base_7|) 0)))) is different from false [2021-11-23 12:29:05,286 WARN L227 SmtUtils]: Spent 2.55m on a formula simplification. DAG size of input: 587 DAG size of output: 583 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)