./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 75d232d8f5b5300b961fad2246cc6bf62d9846d1616b34b46b949e6c32c2a93b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:46:29,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:46:29,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:46:29,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:46:29,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:46:29,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:46:29,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:46:29,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:46:29,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:46:29,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:46:29,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:46:29,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:46:29,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:46:29,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:46:29,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:46:29,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:46:29,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:46:29,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:46:29,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:46:29,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:46:29,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:46:29,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:46:29,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:46:29,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:46:29,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:46:29,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:46:29,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:46:29,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:46:29,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:46:29,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:46:29,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:46:29,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:46:29,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:46:29,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:46:29,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:46:29,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:46:29,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:46:29,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:46:29,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:46:29,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:46:29,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:46:29,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:46:29,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:46:29,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:46:29,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:46:29,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:46:29,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:46:29,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:46:29,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:46:29,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:46:29,579 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:46:29,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:46:29,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:46:29,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:46:29,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:46:29,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:46:29,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:46:29,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:46:29,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:46:29,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:46:29,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:46:29,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:46:29,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:46:29,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:46:29,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:46:29,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:46:29,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:46:29,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:46:29,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:46:29,585 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:46:29,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:46:29,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:46:29,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:46:29,586 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_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75d232d8f5b5300b961fad2246cc6bf62d9846d1616b34b46b949e6c32c2a93b [2021-11-13 18:46:29,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:46:29,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:46:29,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:46:29,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:46:29,979 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:46:29,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:46:30,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data/475d1af85/82bc7e477d5e4092b8fe937b7169b2dc/FLAG09530bed1 [2021-11-13 18:46:30,923 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:46:30,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:46:30,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data/475d1af85/82bc7e477d5e4092b8fe937b7169b2dc/FLAG09530bed1 [2021-11-13 18:46:31,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data/475d1af85/82bc7e477d5e4092b8fe937b7169b2dc [2021-11-13 18:46:31,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:46:31,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:46:31,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:46:31,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:46:31,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:46:31,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:46:31" (1/1) ... [2021-11-13 18:46:31,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee9471d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:31, skipping insertion in model container [2021-11-13 18:46:31,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:46:31" (1/1) ... [2021-11-13 18:46:31,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:46:31,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:46:32,690 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i[133500,133513] [2021-11-13 18:46:32,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:46:32,840 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:46:33,173 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i[133500,133513] [2021-11-13 18:46:33,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:46:33,285 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:46:33,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33 WrapperNode [2021-11-13 18:46:33,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:46:33,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:46:33,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:46:33,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:46:33,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:46:33,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:46:33,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:46:33,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:46:33,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:46:33,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:46:33,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:46:33,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:46:33,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (1/1) ... [2021-11-13 18:46:33,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:46:33,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:46:33,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:46:33,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:46:33,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:46:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:46:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-11-13 18:46:33,895 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-11-13 18:46:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2021-11-13 18:46:33,895 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2021-11-13 18:46:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:46:33,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:46:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:46:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:46:33,896 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:46:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2021-11-13 18:46:33,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2021-11-13 18:46:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-11-13 18:46:33,897 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-11-13 18:46:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-13 18:46:33,897 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-13 18:46:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:46:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 18:46:33,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 18:46:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2021-11-13 18:46:33,898 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2021-11-13 18:46:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:46:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:46:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:46:33,899 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:46:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2021-11-13 18:46:33,899 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2021-11-13 18:46:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-11-13 18:46:33,900 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-11-13 18:46:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-13 18:46:33,900 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-13 18:46:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2021-11-13 18:46:33,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2021-11-13 18:46:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2021-11-13 18:46:33,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2021-11-13 18:46:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2021-11-13 18:46:33,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2021-11-13 18:46:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 18:46:33,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 18:46:33,903 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:46:33,903 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:46:33,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:46:33,903 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2021-11-13 18:46:33,903 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2021-11-13 18:46:33,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:46:33,904 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2021-11-13 18:46:33,904 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2021-11-13 18:46:33,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:46:33,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:46:33,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 18:46:33,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 18:46:34,539 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:46:37,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:46:37,396 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:46:37,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:46:37 BoogieIcfgContainer [2021-11-13 18:46:37,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:46:37,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:46:37,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:46:37,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:46:37,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:46:31" (1/3) ... [2021-11-13 18:46:37,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be7890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:46:37, skipping insertion in model container [2021-11-13 18:46:37,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:46:33" (2/3) ... [2021-11-13 18:46:37,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18be7890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:46:37, skipping insertion in model container [2021-11-13 18:46:37,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:46:37" (3/3) ... [2021-11-13 18:46:37,411 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:46:37,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:46:37,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:46:37,484 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:46:37,492 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-13 18:46:37,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:46:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 373 states, 283 states have (on average 1.4169611307420495) internal successors, (401), 290 states have internal predecessors, (401), 68 states have call successors, (68), 21 states have call predecessors, (68), 20 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-13 18:46:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 18:46:37,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:37,545 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:37,545 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1914240548, now seen corresponding path program 1 times [2021-11-13 18:46:37,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:37,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629833689] [2021-11-13 18:46:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:37,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-13 18:46:38,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:38,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629833689] [2021-11-13 18:46:38,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629833689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:38,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:38,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:46:38,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97203377] [2021-11-13 18:46:38,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:38,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:46:38,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:38,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:46:38,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:46:38,732 INFO L87 Difference]: Start difference. First operand has 373 states, 283 states have (on average 1.4169611307420495) internal successors, (401), 290 states have internal predecessors, (401), 68 states have call successors, (68), 21 states have call predecessors, (68), 20 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:46:39,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:39,963 INFO L93 Difference]: Finished difference Result 746 states and 1075 transitions. [2021-11-13 18:46:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:46:39,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2021-11-13 18:46:39,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:39,985 INFO L225 Difference]: With dead ends: 746 [2021-11-13 18:46:39,985 INFO L226 Difference]: Without dead ends: 366 [2021-11-13 18:46:39,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:46:39,997 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 81 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 903.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.48ms SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1058.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:39,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 1549 Invalid, 383 Unknown, 0 Unchecked, 26.48ms Time], IncrementalHoareTripleChecker [137 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1058.71ms Time] [2021-11-13 18:46:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-13 18:46:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 362. [2021-11-13 18:46:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 278 states have (on average 1.39568345323741) internal successors, (388), 279 states have internal predecessors, (388), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-13 18:46:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 514 transitions. [2021-11-13 18:46:40,094 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 514 transitions. Word has length 86 [2021-11-13 18:46:40,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:40,095 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 514 transitions. [2021-11-13 18:46:40,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:46:40,096 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 514 transitions. [2021-11-13 18:46:40,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 18:46:40,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:40,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:40,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:46:40,104 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:40,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:40,105 INFO L85 PathProgramCache]: Analyzing trace with hash -983315798, now seen corresponding path program 1 times [2021-11-13 18:46:40,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:40,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726881765] [2021-11-13 18:46:40,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:40,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-13 18:46:40,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:40,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726881765] [2021-11-13 18:46:40,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726881765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:40,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:40,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:46:40,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125910667] [2021-11-13 18:46:40,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:40,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:46:40,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:46:40,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:46:40,672 INFO L87 Difference]: Start difference. First operand 362 states and 514 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:46:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:41,731 INFO L93 Difference]: Finished difference Result 700 states and 1002 transitions. [2021-11-13 18:46:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:46:41,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2021-11-13 18:46:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:41,742 INFO L225 Difference]: With dead ends: 700 [2021-11-13 18:46:41,742 INFO L226 Difference]: Without dead ends: 692 [2021-11-13 18:46:41,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:46:41,745 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 638 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 742.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.23ms SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 900.21ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:41,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 1389 Invalid, 532 Unknown, 0 Unchecked, 25.23ms Time], IncrementalHoareTripleChecker [357 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 900.21ms Time] [2021-11-13 18:46:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-11-13 18:46:41,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 675. [2021-11-13 18:46:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 526 states have (on average 1.4125475285171103) internal successors, (743), 529 states have internal predecessors, (743), 111 states have call successors, (111), 37 states have call predecessors, (111), 37 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2021-11-13 18:46:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 965 transitions. [2021-11-13 18:46:41,820 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 965 transitions. Word has length 86 [2021-11-13 18:46:41,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:41,821 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 965 transitions. [2021-11-13 18:46:41,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:46:41,821 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 965 transitions. [2021-11-13 18:46:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-13 18:46:41,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:41,828 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:41,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:46:41,829 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1802681606, now seen corresponding path program 1 times [2021-11-13 18:46:41,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:41,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88429931] [2021-11-13 18:46:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:41,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-13 18:46:42,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:42,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88429931] [2021-11-13 18:46:42,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88429931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:42,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:42,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:46:42,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339937811] [2021-11-13 18:46:42,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:42,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:46:42,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:46:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:46:42,358 INFO L87 Difference]: Start difference. First operand 675 states and 965 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 18:46:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:43,378 INFO L93 Difference]: Finished difference Result 1488 states and 2121 transitions. [2021-11-13 18:46:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:46:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 110 [2021-11-13 18:46:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:43,394 INFO L225 Difference]: With dead ends: 1488 [2021-11-13 18:46:43,394 INFO L226 Difference]: Without dead ends: 833 [2021-11-13 18:46:43,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:46:43,405 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 217 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 742.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.64ms SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 884.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:43,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 1572 Invalid, 451 Unknown, 0 Unchecked, 14.64ms Time], IncrementalHoareTripleChecker [147 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 884.93ms Time] [2021-11-13 18:46:43,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-11-13 18:46:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 824. [2021-11-13 18:46:43,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 652 states have (on average 1.4125766871165644) internal successors, (921), 656 states have internal predecessors, (921), 124 states have call successors, (124), 47 states have call predecessors, (124), 47 states have return successors, (124), 122 states have call predecessors, (124), 124 states have call successors, (124) [2021-11-13 18:46:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1169 transitions. [2021-11-13 18:46:43,488 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1169 transitions. Word has length 110 [2021-11-13 18:46:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:43,490 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 1169 transitions. [2021-11-13 18:46:43,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 18:46:43,490 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1169 transitions. [2021-11-13 18:46:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-13 18:46:43,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:43,506 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:43,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:46:43,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:43,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1483219582, now seen corresponding path program 1 times [2021-11-13 18:46:43,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:43,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297682014] [2021-11-13 18:46:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:43,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:43,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:43,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:43,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:43,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:46:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:46:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:46:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-13 18:46:44,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:44,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297682014] [2021-11-13 18:46:44,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297682014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:44,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:44,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:46:44,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814350235] [2021-11-13 18:46:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:44,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:46:44,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:44,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:46:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:46:44,204 INFO L87 Difference]: Start difference. First operand 824 states and 1169 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:46:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:45,030 INFO L93 Difference]: Finished difference Result 1632 states and 2319 transitions. [2021-11-13 18:46:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:46:45,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 171 [2021-11-13 18:46:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:45,037 INFO L225 Difference]: With dead ends: 1632 [2021-11-13 18:46:45,038 INFO L226 Difference]: Without dead ends: 828 [2021-11-13 18:46:45,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:46:45,041 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 493 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 615.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.45ms SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 716.79ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:45,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 1134 Invalid, 325 Unknown, 0 Unchecked, 11.45ms Time], IncrementalHoareTripleChecker [140 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 716.79ms Time] [2021-11-13 18:46:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-11-13 18:46:45,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 824. [2021-11-13 18:46:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 652 states have (on average 1.388036809815951) internal successors, (905), 656 states have internal predecessors, (905), 124 states have call successors, (124), 47 states have call predecessors, (124), 47 states have return successors, (124), 122 states have call predecessors, (124), 124 states have call successors, (124) [2021-11-13 18:46:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1153 transitions. [2021-11-13 18:46:45,110 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1153 transitions. Word has length 171 [2021-11-13 18:46:45,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:45,111 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 1153 transitions. [2021-11-13 18:46:45,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:46:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1153 transitions. [2021-11-13 18:46:45,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-13 18:46:45,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:45,134 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:45,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:46:45,134 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1271138360, now seen corresponding path program 1 times [2021-11-13 18:46:45,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:45,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873255459] [2021-11-13 18:46:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:45,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:46:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:46:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:46:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-13 18:46:45,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:45,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873255459] [2021-11-13 18:46:45,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873255459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:45,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:45,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:46:45,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868846461] [2021-11-13 18:46:45,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:45,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:46:45,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:45,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:46:45,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:46:45,644 INFO L87 Difference]: Start difference. First operand 824 states and 1153 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 18:46:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:47,084 INFO L93 Difference]: Finished difference Result 2440 states and 3418 transitions. [2021-11-13 18:46:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:46:47,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 171 [2021-11-13 18:46:47,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:47,101 INFO L225 Difference]: With dead ends: 2440 [2021-11-13 18:46:47,101 INFO L226 Difference]: Without dead ends: 1636 [2021-11-13 18:46:47,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:46:47,106 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 720 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1015.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.45ms SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1224.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:47,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2654 Invalid, 637 Unknown, 0 Unchecked, 28.45ms Time], IncrementalHoareTripleChecker [297 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 1224.14ms Time] [2021-11-13 18:46:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-11-13 18:46:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1115. [2021-11-13 18:46:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 883 states have (on average 1.3986409966024915) internal successors, (1235), 888 states have internal predecessors, (1235), 166 states have call successors, (166), 65 states have call predecessors, (166), 65 states have return successors, (166), 163 states have call predecessors, (166), 166 states have call successors, (166) [2021-11-13 18:46:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1567 transitions. [2021-11-13 18:46:47,206 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1567 transitions. Word has length 171 [2021-11-13 18:46:47,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:47,208 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1567 transitions. [2021-11-13 18:46:47,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 18:46:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1567 transitions. [2021-11-13 18:46:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-13 18:46:47,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:47,215 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:47,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:46:47,216 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:47,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash -8725318, now seen corresponding path program 1 times [2021-11-13 18:46:47,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:47,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387167168] [2021-11-13 18:46:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:47,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:46:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:46:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:46:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-13 18:46:47,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:47,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387167168] [2021-11-13 18:46:47,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387167168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:47,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:47,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:46:47,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273249623] [2021-11-13 18:46:47,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:47,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:46:47,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:46:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:46:47,728 INFO L87 Difference]: Start difference. First operand 1115 states and 1567 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:46:48,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:48,722 INFO L93 Difference]: Finished difference Result 2115 states and 3011 transitions. [2021-11-13 18:46:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:46:48,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 171 [2021-11-13 18:46:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:48,732 INFO L225 Difference]: With dead ends: 2115 [2021-11-13 18:46:48,732 INFO L226 Difference]: Without dead ends: 936 [2021-11-13 18:46:48,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:46:48,737 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 480 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 700.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.39ms SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 824.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:48,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1066 Invalid, 308 Unknown, 0 Unchecked, 9.39ms Time], IncrementalHoareTripleChecker [189 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 824.87ms Time] [2021-11-13 18:46:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-11-13 18:46:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 926. [2021-11-13 18:46:48,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 736 states have (on average 1.4116847826086956) internal successors, (1039), 740 states have internal predecessors, (1039), 139 states have call successors, (139), 50 states have call predecessors, (139), 50 states have return successors, (139), 137 states have call predecessors, (139), 139 states have call successors, (139) [2021-11-13 18:46:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1317 transitions. [2021-11-13 18:46:48,813 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1317 transitions. Word has length 171 [2021-11-13 18:46:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:48,815 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1317 transitions. [2021-11-13 18:46:48,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:46:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1317 transitions. [2021-11-13 18:46:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-13 18:46:48,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:48,821 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:48,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:46:48,822 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1471789036, now seen corresponding path program 1 times [2021-11-13 18:46:48,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:48,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504510678] [2021-11-13 18:46:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:48,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:46:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:46:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:46:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-13 18:46:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-13 18:46:49,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:49,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504510678] [2021-11-13 18:46:49,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504510678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:49,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:49,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 18:46:49,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878007149] [2021-11-13 18:46:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:49,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:46:49,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:49,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:46:49,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:46:49,439 INFO L87 Difference]: Start difference. First operand 926 states and 1317 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:46:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:51,393 INFO L93 Difference]: Finished difference Result 1957 states and 2892 transitions. [2021-11-13 18:46:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:46:51,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 173 [2021-11-13 18:46:51,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:51,410 INFO L225 Difference]: With dead ends: 1957 [2021-11-13 18:46:51,410 INFO L226 Difference]: Without dead ends: 1602 [2021-11-13 18:46:51,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:46:51,416 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 1537 mSDsluCounter, 3980 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1423.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.59ms SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1650.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:51,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 4753 Invalid, 1074 Unknown, 0 Unchecked, 39.59ms Time], IncrementalHoareTripleChecker [392 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 1650.59ms Time] [2021-11-13 18:46:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-11-13 18:46:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 936. [2021-11-13 18:46:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 746 states have (on average 1.406166219839142) internal successors, (1049), 750 states have internal predecessors, (1049), 139 states have call successors, (139), 50 states have call predecessors, (139), 50 states have return successors, (139), 137 states have call predecessors, (139), 139 states have call successors, (139) [2021-11-13 18:46:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1327 transitions. [2021-11-13 18:46:51,555 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1327 transitions. Word has length 173 [2021-11-13 18:46:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:51,556 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 1327 transitions. [2021-11-13 18:46:51,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:46:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1327 transitions. [2021-11-13 18:46:51,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 18:46:51,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:51,563 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:51,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:46:51,564 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:51,565 INFO L85 PathProgramCache]: Analyzing trace with hash 225870394, now seen corresponding path program 1 times [2021-11-13 18:46:51,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:51,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179370668] [2021-11-13 18:46:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:51,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:46:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:46:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:46:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-13 18:46:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-13 18:46:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 18:46:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-13 18:46:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-13 18:46:52,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:52,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179370668] [2021-11-13 18:46:52,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179370668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:52,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:46:52,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:46:52,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142955649] [2021-11-13 18:46:52,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:52,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:46:52,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:52,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:46:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:46:52,142 INFO L87 Difference]: Start difference. First operand 936 states and 1327 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-13 18:46:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:53,997 INFO L93 Difference]: Finished difference Result 1895 states and 2735 transitions. [2021-11-13 18:46:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:46:53,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 180 [2021-11-13 18:46:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:54,009 INFO L225 Difference]: With dead ends: 1895 [2021-11-13 18:46:54,009 INFO L226 Difference]: Without dead ends: 1069 [2021-11-13 18:46:54,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:46:54,016 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 494 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1359.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.22ms SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1585.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:54,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 1846 Invalid, 864 Unknown, 0 Unchecked, 16.22ms Time], IncrementalHoareTripleChecker [377 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1585.56ms Time] [2021-11-13 18:46:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-13 18:46:54,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1046. [2021-11-13 18:46:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 874 states have (on average 1.3775743707093822) internal successors, (1204), 877 states have internal predecessors, (1204), 118 states have call successors, (118), 53 states have call predecessors, (118), 53 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2021-11-13 18:46:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1440 transitions. [2021-11-13 18:46:54,110 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1440 transitions. Word has length 180 [2021-11-13 18:46:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:54,111 INFO L470 AbstractCegarLoop]: Abstraction has 1046 states and 1440 transitions. [2021-11-13 18:46:54,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-13 18:46:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1440 transitions. [2021-11-13 18:46:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-13 18:46:54,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:54,117 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:54,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:46:54,118 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:54,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1770188866, now seen corresponding path program 1 times [2021-11-13 18:46:54,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:54,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403252758] [2021-11-13 18:46:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:54,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:46:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:46:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:46:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:46:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-13 18:46:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-11-13 18:46:54,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:54,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403252758] [2021-11-13 18:46:54,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403252758] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:46:54,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050683566] [2021-11-13 18:46:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:54,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:46:54,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:46:54,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:46:54,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:46:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:55,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 2932 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:46:55,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-13 18:46:56,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:46:56,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050683566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:56,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:46:56,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-11-13 18:46:56,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940309343] [2021-11-13 18:46:56,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:56,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:46:56,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:46:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:46:56,151 INFO L87 Difference]: Start difference. First operand 1046 states and 1440 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 18:46:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:56,674 INFO L93 Difference]: Finished difference Result 2146 states and 2953 transitions. [2021-11-13 18:46:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:46:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 179 [2021-11-13 18:46:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:56,684 INFO L225 Difference]: With dead ends: 2146 [2021-11-13 18:46:56,684 INFO L226 Difference]: Without dead ends: 1117 [2021-11-13 18:46:56,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:46:56,690 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 96 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 380.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 410.31ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:56,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1690 Invalid, 16 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 410.31ms Time] [2021-11-13 18:46:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2021-11-13 18:46:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1106. [2021-11-13 18:46:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 925 states have (on average 1.3794594594594594) internal successors, (1276), 929 states have internal predecessors, (1276), 123 states have call successors, (123), 57 states have call predecessors, (123), 57 states have return successors, (123), 121 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-13 18:46:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1522 transitions. [2021-11-13 18:46:56,790 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1522 transitions. Word has length 179 [2021-11-13 18:46:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:56,795 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 1522 transitions. [2021-11-13 18:46:56,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 18:46:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1522 transitions. [2021-11-13 18:46:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 18:46:56,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:56,801 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:56,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:46:57,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-13 18:46:57,030 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:57,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:57,031 INFO L85 PathProgramCache]: Analyzing trace with hash 586179371, now seen corresponding path program 1 times [2021-11-13 18:46:57,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:57,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351293874] [2021-11-13 18:46:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:57,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:46:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:46:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:46:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:46:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:46:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:46:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:46:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 18:46:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-13 18:46:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-13 18:46:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:46:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:46:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-13 18:46:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-13 18:46:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2021-11-13 18:46:57,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:57,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351293874] [2021-11-13 18:46:57,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351293874] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:46:57,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152639951] [2021-11-13 18:46:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:57,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:46:57,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:46:57,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:46:57,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:46:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:59,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 3082 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:46:59,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-13 18:46:59,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:46:59,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152639951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:46:59,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:46:59,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-11-13 18:46:59,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345722537] [2021-11-13 18:46:59,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:46:59,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:46:59,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:59,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:46:59,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:46:59,686 INFO L87 Difference]: Start difference. First operand 1106 states and 1522 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:46:59,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:59,814 INFO L93 Difference]: Finished difference Result 2206 states and 3037 transitions. [2021-11-13 18:46:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:46:59,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 200 [2021-11-13 18:46:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:59,825 INFO L225 Difference]: With dead ends: 2206 [2021-11-13 18:46:59,825 INFO L226 Difference]: Without dead ends: 1107 [2021-11-13 18:46:59,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:46:59,829 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 3 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.06ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:59,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1499 Invalid, 14 Unknown, 0 Unchecked, 4.06ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 19.13ms Time] [2021-11-13 18:46:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-13 18:46:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1107. [2021-11-13 18:46:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 926 states have (on average 1.3790496760259179) internal successors, (1277), 930 states have internal predecessors, (1277), 123 states have call successors, (123), 57 states have call predecessors, (123), 57 states have return successors, (123), 121 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-13 18:46:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1523 transitions. [2021-11-13 18:46:59,925 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1523 transitions. Word has length 200 [2021-11-13 18:46:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:59,926 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1523 transitions. [2021-11-13 18:46:59,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:46:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1523 transitions. [2021-11-13 18:46:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-13 18:46:59,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:59,932 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:59,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:00,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:47:00,158 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:00,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:00,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1693839950, now seen corresponding path program 1 times [2021-11-13 18:47:00,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:47:00,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788005501] [2021-11-13 18:47:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:00,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:47:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:47:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:47:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:47:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:47:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 18:47:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 18:47:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 18:47:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 18:47:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 18:47:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 18:47:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-13 18:47:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 18:47:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-11-13 18:47:00,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:47:00,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788005501] [2021-11-13 18:47:00,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788005501] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:47:00,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727768385] [2021-11-13 18:47:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:00,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:47:00,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:47:00,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:47:00,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:47:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:02,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:47:02,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 196 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-13 18:47:02,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-11-13 18:47:03,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727768385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:47:03,381 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:47:03,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2021-11-13 18:47:03,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992877785] [2021-11-13 18:47:03,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:47:03,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 18:47:03,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:47:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 18:47:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:47:03,383 INFO L87 Difference]: Start difference. First operand 1107 states and 1523 transitions. Second operand has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (35), 5 states have call predecessors, (35), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:47:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:04,810 INFO L93 Difference]: Finished difference Result 2213 states and 3048 transitions. [2021-11-13 18:47:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:47:04,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (35), 5 states have call predecessors, (35), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 203 [2021-11-13 18:47:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:04,819 INFO L225 Difference]: With dead ends: 2213 [2021-11-13 18:47:04,819 INFO L226 Difference]: Without dead ends: 1110 [2021-11-13 18:47:04,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:47:04,823 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 85 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1000.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 4201 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.93ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1175.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:04,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 4201 Invalid, 681 Unknown, 0 Unchecked, 18.93ms Time], IncrementalHoareTripleChecker [135 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1175.81ms Time] [2021-11-13 18:47:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-13 18:47:04,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-13 18:47:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 929 states have (on average 1.3778256189451024) internal successors, (1280), 933 states have internal predecessors, (1280), 123 states have call successors, (123), 57 states have call predecessors, (123), 57 states have return successors, (123), 121 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-13 18:47:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1526 transitions. [2021-11-13 18:47:04,916 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1526 transitions. Word has length 203 [2021-11-13 18:47:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:04,916 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1526 transitions. [2021-11-13 18:47:04,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (35), 5 states have call predecessors, (35), 4 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:47:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1526 transitions. [2021-11-13 18:47:04,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-13 18:47:04,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:04,922 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:04,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:05,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:47:05,138 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1988960661, now seen corresponding path program 2 times [2021-11-13 18:47:05,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:47:05,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196309044] [2021-11-13 18:47:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:05,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:47:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:47:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:47:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:47:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:47:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:47:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:47:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:47:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 18:47:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-13 18:47:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-13 18:47:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 18:47:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-13 18:47:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-13 18:47:05,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:47:05,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196309044] [2021-11-13 18:47:05,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196309044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:05,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:05,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-13 18:47:05,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977899893] [2021-11-13 18:47:05,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:05,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:47:05,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:47:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:47:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:47:05,877 INFO L87 Difference]: Start difference. First operand 1110 states and 1526 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 11 states have internal predecessors, (83), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:47:07,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:07,982 INFO L93 Difference]: Finished difference Result 2790 states and 4012 transitions. [2021-11-13 18:47:07,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:47:07,983 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 11 states have internal predecessors, (83), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 212 [2021-11-13 18:47:07,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:07,998 INFO L225 Difference]: With dead ends: 2790 [2021-11-13 18:47:07,998 INFO L226 Difference]: Without dead ends: 2331 [2021-11-13 18:47:08,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2021-11-13 18:47:08,001 INFO L933 BasicCegarLoop]: 1318 mSDtfsCounter, 2815 mSDsluCounter, 5786 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 1166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1347.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2815 SdHoareTripleChecker+Valid, 7104 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.77ms SdHoareTripleChecker+Time, 1166 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1600.78ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:08,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2815 Valid, 7104 Invalid, 1939 Unknown, 0 Unchecked, 37.77ms Time], IncrementalHoareTripleChecker [1166 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 1600.78ms Time] [2021-11-13 18:47:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2021-11-13 18:47:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 1113. [2021-11-13 18:47:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 932 states have (on average 1.3766094420600858) internal successors, (1283), 936 states have internal predecessors, (1283), 123 states have call successors, (123), 57 states have call predecessors, (123), 57 states have return successors, (123), 121 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-13 18:47:08,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1529 transitions. [2021-11-13 18:47:08,110 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1529 transitions. Word has length 212 [2021-11-13 18:47:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:08,111 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1529 transitions. [2021-11-13 18:47:08,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 11 states have internal predecessors, (83), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:47:08,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1529 transitions. [2021-11-13 18:47:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-13 18:47:08,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:08,117 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:08,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:47:08,118 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:08,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:08,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1513661749, now seen corresponding path program 1 times [2021-11-13 18:47:08,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:47:08,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271698925] [2021-11-13 18:47:08,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:08,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:47:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:47:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:47:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:47:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:47:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:47:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:47:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:47:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 18:47:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-13 18:47:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-13 18:47:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:47:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:47:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 18:47:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-13 18:47:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-13 18:47:08,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:47:08,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271698925] [2021-11-13 18:47:08,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271698925] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:47:08,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742008781] [2021-11-13 18:47:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:08,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:47:08,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:47:08,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:47:08,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:47:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:09,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:47:09,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-13 18:47:09,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:47:09,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742008781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:09,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:47:09,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-11-13 18:47:09,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191239702] [2021-11-13 18:47:09,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:09,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:47:09,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:47:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:47:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:47:09,781 INFO L87 Difference]: Start difference. First operand 1113 states and 1529 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:47:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:10,228 INFO L93 Difference]: Finished difference Result 2603 states and 3556 transitions. [2021-11-13 18:47:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:47:10,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 220 [2021-11-13 18:47:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:10,241 INFO L225 Difference]: With dead ends: 2603 [2021-11-13 18:47:10,241 INFO L226 Difference]: Without dead ends: 1664 [2021-11-13 18:47:10,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:47:10,245 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 587 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 246.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.32ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 287.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:10,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 2707 Invalid, 149 Unknown, 0 Unchecked, 11.32ms Time], IncrementalHoareTripleChecker [56 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 287.65ms Time] [2021-11-13 18:47:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-11-13 18:47:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1119. [2021-11-13 18:47:10,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 936 states have (on average 1.3771367521367521) internal successors, (1289), 940 states have internal predecessors, (1289), 125 states have call successors, (125), 57 states have call predecessors, (125), 57 states have return successors, (125), 123 states have call predecessors, (125), 125 states have call successors, (125) [2021-11-13 18:47:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1539 transitions. [2021-11-13 18:47:10,338 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1539 transitions. Word has length 220 [2021-11-13 18:47:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:10,339 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1539 transitions. [2021-11-13 18:47:10,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:47:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1539 transitions. [2021-11-13 18:47:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-13 18:47:10,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:10,344 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:10,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:10,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-13 18:47:10,558 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -74686153, now seen corresponding path program 1 times [2021-11-13 18:47:10,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:47:10,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746297336] [2021-11-13 18:47:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:10,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:47:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:47:11,911 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:47:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:47:13,481 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:47:13,481 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:47:13,482 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:47:13,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:47:13,487 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:13,490 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:47:13,568 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,569 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,570 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,570 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,571 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,571 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,572 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,572 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,572 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,573 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,573 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,573 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,574 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,574 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,574 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,575 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,575 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,575 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,576 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,576 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,578 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,578 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,579 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,579 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,579 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,580 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,580 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,581 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,581 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,581 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,582 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,582 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,583 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,583 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,583 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,584 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,584 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,584 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,585 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,585 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,587 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,587 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,587 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,588 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,588 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,589 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,589 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,590 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,590 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,590 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,591 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,591 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,592 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,592 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,592 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,593 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,593 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,593 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,594 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:47:13,594 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:47:13,672 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:47:13,674 INFO L158 Benchmark]: Toolchain (without parser) took 42176.70ms. Allocated memory was 117.4MB in the beginning and 551.6MB in the end (delta: 434.1MB). Free memory was 73.4MB in the beginning and 407.6MB in the end (delta: -334.3MB). Peak memory consumption was 292.1MB. Max. memory is 16.1GB. [2021-11-13 18:47:13,674 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:47:13,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1786.23ms. Allocated memory was 117.4MB in the beginning and 157.3MB in the end (delta: 39.8MB). Free memory was 73.1MB in the beginning and 92.3MB in the end (delta: -19.3MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2021-11-13 18:47:13,675 INFO L158 Benchmark]: Boogie Procedure Inliner took 276.19ms. Allocated memory is still 157.3MB. Free memory was 92.3MB in the beginning and 110.9MB in the end (delta: -18.6MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2021-11-13 18:47:13,676 INFO L158 Benchmark]: Boogie Preprocessor took 217.34ms. Allocated memory is still 157.3MB. Free memory was 110.9MB in the beginning and 99.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:47:13,676 INFO L158 Benchmark]: RCFGBuilder took 3614.35ms. Allocated memory was 157.3MB in the beginning and 255.9MB in the end (delta: 98.6MB). Free memory was 99.9MB in the beginning and 190.9MB in the end (delta: -90.9MB). Peak memory consumption was 124.1MB. Max. memory is 16.1GB. [2021-11-13 18:47:13,677 INFO L158 Benchmark]: TraceAbstraction took 36272.00ms. Allocated memory was 255.9MB in the beginning and 551.6MB in the end (delta: 295.7MB). Free memory was 190.9MB in the beginning and 407.6MB in the end (delta: -216.8MB). Peak memory consumption was 271.9MB. Max. memory is 16.1GB. [2021-11-13 18:47:13,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1786.23ms. Allocated memory was 117.4MB in the beginning and 157.3MB in the end (delta: 39.8MB). Free memory was 73.1MB in the beginning and 92.3MB in the end (delta: -19.3MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 276.19ms. Allocated memory is still 157.3MB. Free memory was 92.3MB in the beginning and 110.9MB in the end (delta: -18.6MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 217.34ms. Allocated memory is still 157.3MB. Free memory was 110.9MB in the beginning and 99.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3614.35ms. Allocated memory was 157.3MB in the beginning and 255.9MB in the end (delta: 98.6MB). Free memory was 99.9MB in the beginning and 190.9MB in the end (delta: -90.9MB). Peak memory consumption was 124.1MB. Max. memory is 16.1GB. * TraceAbstraction took 36272.00ms. Allocated memory was 255.9MB in the beginning and 551.6MB in the end (delta: 295.7MB). Free memory was 190.9MB in the beginning and 407.6MB in the end (delta: -216.8MB). Peak memory consumption was 271.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:47:13,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 75d232d8f5b5300b961fad2246cc6bf62d9846d1616b34b46b949e6c32c2a93b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:47:16,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:47:16,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:47:16,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:47:16,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:47:16,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:47:16,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:47:16,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:47:16,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:47:16,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:47:16,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:47:16,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:47:16,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:47:16,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:47:16,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:47:16,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:47:16,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:47:16,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:47:16,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:47:16,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:47:16,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:47:16,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:47:16,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:47:16,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:47:16,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:47:16,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:47:16,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:47:16,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:47:16,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:47:16,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:47:16,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:47:16,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:47:16,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:47:16,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:47:16,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:47:16,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:47:16,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:47:16,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:47:16,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:47:16,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:47:16,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:47:16,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-13 18:47:16,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:47:16,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:47:16,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:47:16,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:47:16,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:47:16,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:47:16,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:47:16,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:47:16,226 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:47:16,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:47:16,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:47:16,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:47:16,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:47:16,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:47:16,228 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:47:16,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:47:16,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:47:16,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:47:16,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:47:16,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:47:16,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:47:16,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:47:16,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:47:16,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:47:16,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:47:16,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:47:16,231 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:47:16,231 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:47:16,232 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:47:16,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:47:16,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:47:16,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:47:16,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:47:16,233 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75d232d8f5b5300b961fad2246cc6bf62d9846d1616b34b46b949e6c32c2a93b [2021-11-13 18:47:16,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:47:16,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:47:16,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:47:16,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:47:16,598 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:47:16,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:47:16,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data/91e41c767/912b2f2535084d2fb9f3ae9f48467411/FLAG754c3f144 [2021-11-13 18:47:17,647 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:47:17,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:47:17,688 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data/91e41c767/912b2f2535084d2fb9f3ae9f48467411/FLAG754c3f144 [2021-11-13 18:47:17,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/data/91e41c767/912b2f2535084d2fb9f3ae9f48467411 [2021-11-13 18:47:17,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:47:17,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:47:17,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:47:17,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:47:17,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:47:17,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:47:17" (1/1) ... [2021-11-13 18:47:17,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ec2f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:17, skipping insertion in model container [2021-11-13 18:47:17,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:47:17" (1/1) ... [2021-11-13 18:47:17,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:47:17,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:47:18,680 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i[133500,133513] [2021-11-13 18:47:18,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:47:18,782 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:47:19,003 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i[133500,133513] [2021-11-13 18:47:19,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:47:19,143 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:47:19,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19 WrapperNode [2021-11-13 18:47:19,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:47:19,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:47:19,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:47:19,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:47:19,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:47:19,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:47:19,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:47:19,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:47:19,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:47:19,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:47:19,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:47:19,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:47:19,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (1/1) ... [2021-11-13 18:47:19,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:47:19,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:47:19,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:47:19,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:47:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:47:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:47:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2021-11-13 18:47:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2021-11-13 18:47:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:47:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:47:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:47:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:47:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2021-11-13 18:47:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2021-11-13 18:47:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-11-13 18:47:19,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-11-13 18:47:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-11-13 18:47:19,666 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-11-13 18:47:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:47:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:47:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2021-11-13 18:47:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2021-11-13 18:47:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-13 18:47:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-13 18:47:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2021-11-13 18:47:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2021-11-13 18:47:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 18:47:19,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 18:47:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:47:19,668 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:47:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:47:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 18:47:19,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 18:47:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:47:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:47:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-11-13 18:47:19,669 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-11-13 18:47:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:47:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 18:47:19,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 18:47:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2021-11-13 18:47:19,670 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2021-11-13 18:47:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:47:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:47:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 18:47:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:47:19,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 18:47:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 18:47:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-11-13 18:47:19,672 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-11-13 18:47:19,672 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2021-11-13 18:47:19,673 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2021-11-13 18:47:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2021-11-13 18:47:19,673 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2021-11-13 18:47:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2021-11-13 18:47:19,673 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2021-11-13 18:47:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2021-11-13 18:47:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2021-11-13 18:47:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:47:19,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:47:20,098 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:47:24,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:47:24,999 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:47:25,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:47:25 BoogieIcfgContainer [2021-11-13 18:47:25,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:47:25,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:47:25,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:47:25,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:47:25,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:47:17" (1/3) ... [2021-11-13 18:47:25,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@809cddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:47:25, skipping insertion in model container [2021-11-13 18:47:25,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:47:19" (2/3) ... [2021-11-13 18:47:25,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@809cddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:47:25, skipping insertion in model container [2021-11-13 18:47:25,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:47:25" (3/3) ... [2021-11-13 18:47:25,018 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-c0cc359-1-104_1a-drivers--usb--serial--qcserial.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:47:25,024 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:47:25,024 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:47:25,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:47:25,113 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-13 18:47:25,113 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:47:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 373 states, 283 states have (on average 1.4169611307420495) internal successors, (401), 290 states have internal predecessors, (401), 68 states have call successors, (68), 21 states have call predecessors, (68), 20 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-13 18:47:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 18:47:25,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:25,186 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:25,189 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1914240548, now seen corresponding path program 1 times [2021-11-13 18:47:25,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:25,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226467857] [2021-11-13 18:47:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:25,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:25,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:25,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:25,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:47:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:26,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:47:26,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-13 18:47:26,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-13 18:47:26,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:26,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226467857] [2021-11-13 18:47:26,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226467857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:26,812 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:26,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:47:26,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152148691] [2021-11-13 18:47:26,815 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:26,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:47:26,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:26,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:47:26,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:47:26,864 INFO L87 Difference]: Start difference. First operand has 373 states, 283 states have (on average 1.4169611307420495) internal successors, (401), 290 states have internal predecessors, (401), 68 states have call successors, (68), 21 states have call predecessors, (68), 20 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:47:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:26,973 INFO L93 Difference]: Finished difference Result 742 states and 1068 transitions. [2021-11-13 18:47:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:47:26,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2021-11-13 18:47:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:27,010 INFO L225 Difference]: With dead ends: 742 [2021-11-13 18:47:27,010 INFO L226 Difference]: Without dead ends: 362 [2021-11-13 18:47:27,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:47:27,020 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:27,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 14.02ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:47:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-13 18:47:27,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-11-13 18:47:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 278 states have (on average 1.39568345323741) internal successors, (388), 279 states have internal predecessors, (388), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-13 18:47:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 514 transitions. [2021-11-13 18:47:27,097 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 514 transitions. Word has length 86 [2021-11-13 18:47:27,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:27,098 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 514 transitions. [2021-11-13 18:47:27,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:47:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 514 transitions. [2021-11-13 18:47:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 18:47:27,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:27,104 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:27,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:27,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:27,327 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:27,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash -983315798, now seen corresponding path program 1 times [2021-11-13 18:47:27,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:27,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653483729] [2021-11-13 18:47:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:27,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:27,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:27,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:27,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:47:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:28,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:47:28,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-13 18:47:28,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 18:47:28,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:28,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653483729] [2021-11-13 18:47:28,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653483729] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:47:28,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:47:28,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-13 18:47:28,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124993976] [2021-11-13 18:47:28,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:28,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:47:28,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:47:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:47:28,915 INFO L87 Difference]: Start difference. First operand 362 states and 514 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:47:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:29,108 INFO L93 Difference]: Finished difference Result 718 states and 1021 transitions. [2021-11-13 18:47:29,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:47:29,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2021-11-13 18:47:29,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:29,120 INFO L225 Difference]: With dead ends: 718 [2021-11-13 18:47:29,120 INFO L226 Difference]: Without dead ends: 363 [2021-11-13 18:47:29,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:47:29,124 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 3 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:29,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1529 Invalid, 14 Unknown, 0 Unchecked, 12.11ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 84.70ms Time] [2021-11-13 18:47:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-13 18:47:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2021-11-13 18:47:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 279 states have (on average 1.3942652329749103) internal successors, (389), 280 states have internal predecessors, (389), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-13 18:47:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 515 transitions. [2021-11-13 18:47:29,172 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 515 transitions. Word has length 86 [2021-11-13 18:47:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:29,174 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 515 transitions. [2021-11-13 18:47:29,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:47:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 515 transitions. [2021-11-13 18:47:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 18:47:29,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:29,178 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:29,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:29,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:29,402 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:29,402 INFO L85 PathProgramCache]: Analyzing trace with hash 925658353, now seen corresponding path program 1 times [2021-11-13 18:47:29,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:29,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587425289] [2021-11-13 18:47:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:29,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:29,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:29,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:29,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:47:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:30,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:47:30,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-13 18:47:30,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-13 18:47:31,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:31,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587425289] [2021-11-13 18:47:31,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587425289] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:47:31,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:47:31,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 18:47:31,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885995070] [2021-11-13 18:47:31,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:47:31,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:47:31,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:31,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:47:31,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:47:31,105 INFO L87 Difference]: Start difference. First operand 363 states and 515 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:47:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:31,426 INFO L93 Difference]: Finished difference Result 725 states and 1032 transitions. [2021-11-13 18:47:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:47:31,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2021-11-13 18:47:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:31,432 INFO L225 Difference]: With dead ends: 725 [2021-11-13 18:47:31,432 INFO L226 Difference]: Without dead ends: 366 [2021-11-13 18:47:31,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:47:31,434 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 10 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.30ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.21ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:31,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2549 Invalid, 37 Unknown, 0 Unchecked, 29.30ms Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 121.21ms Time] [2021-11-13 18:47:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-13 18:47:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2021-11-13 18:47:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 282 states have (on average 1.3900709219858156) internal successors, (392), 283 states have internal predecessors, (392), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-13 18:47:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 518 transitions. [2021-11-13 18:47:31,462 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 518 transitions. Word has length 89 [2021-11-13 18:47:31,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:31,463 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 518 transitions. [2021-11-13 18:47:31,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:47:31,464 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 518 transitions. [2021-11-13 18:47:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 18:47:31,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:31,467 INFO L514 BasicCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:31,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:31,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:31,682 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash -79587862, now seen corresponding path program 2 times [2021-11-13 18:47:31,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:31,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237126518] [2021-11-13 18:47:31,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:47:31,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:31,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:31,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:31,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:47:32,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:47:32,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:47:32,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:47:32,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-13 18:47:32,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-13 18:47:33,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:33,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237126518] [2021-11-13 18:47:33,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237126518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:33,167 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:33,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-13 18:47:33,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754031813] [2021-11-13 18:47:33,168 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:33,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:47:33,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:33,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:47:33,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:33,170 INFO L87 Difference]: Start difference. First operand 366 states and 518 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:47:33,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:33,217 INFO L93 Difference]: Finished difference Result 700 states and 999 transitions. [2021-11-13 18:47:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:47:33,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2021-11-13 18:47:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:33,225 INFO L225 Difference]: With dead ends: 700 [2021-11-13 18:47:33,226 INFO L226 Difference]: Without dead ends: 692 [2021-11-13 18:47:33,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:33,227 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 448 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:33,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 1074 Invalid, 5 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 11.55ms Time] [2021-11-13 18:47:33,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-11-13 18:47:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 679. [2021-11-13 18:47:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 530 states have (on average 1.409433962264151) internal successors, (747), 533 states have internal predecessors, (747), 111 states have call successors, (111), 37 states have call predecessors, (111), 37 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2021-11-13 18:47:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 969 transitions. [2021-11-13 18:47:33,299 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 969 transitions. Word has length 98 [2021-11-13 18:47:33,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:33,301 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 969 transitions. [2021-11-13 18:47:33,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:47:33,302 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 969 transitions. [2021-11-13 18:47:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 18:47:33,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:33,307 INFO L514 BasicCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:33,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:33,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:33,514 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:33,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1936902214, now seen corresponding path program 1 times [2021-11-13 18:47:33,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:33,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717132605] [2021-11-13 18:47:33,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:33,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:33,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:33,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:47:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:34,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:47:34,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-13 18:47:35,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-13 18:47:35,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:35,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717132605] [2021-11-13 18:47:35,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717132605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:35,325 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:35,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:47:35,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494624109] [2021-11-13 18:47:35,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:35,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:47:35,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:35,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:47:35,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:35,328 INFO L87 Difference]: Start difference. First operand 679 states and 969 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 18:47:35,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:35,746 INFO L93 Difference]: Finished difference Result 1488 states and 2118 transitions. [2021-11-13 18:47:35,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:47:35,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 122 [2021-11-13 18:47:35,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:35,755 INFO L225 Difference]: With dead ends: 1488 [2021-11-13 18:47:35,756 INFO L226 Difference]: Without dead ends: 833 [2021-11-13 18:47:35,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:35,762 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 130 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 326.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 372.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:35,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 927 Invalid, 92 Unknown, 0 Unchecked, 4.28ms Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 372.59ms Time] [2021-11-13 18:47:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-11-13 18:47:35,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 828. [2021-11-13 18:47:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 656 states have (on average 1.4100609756097562) internal successors, (925), 660 states have internal predecessors, (925), 124 states have call successors, (124), 47 states have call predecessors, (124), 47 states have return successors, (124), 122 states have call predecessors, (124), 124 states have call successors, (124) [2021-11-13 18:47:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1173 transitions. [2021-11-13 18:47:35,813 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1173 transitions. Word has length 122 [2021-11-13 18:47:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:35,813 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1173 transitions. [2021-11-13 18:47:35,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-13 18:47:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1173 transitions. [2021-11-13 18:47:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 18:47:35,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:35,826 INFO L514 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:35,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:36,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:36,042 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash 248504126, now seen corresponding path program 1 times [2021-11-13 18:47:36,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:36,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517542649] [2021-11-13 18:47:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:36,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:36,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:36,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:36,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:47:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:37,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:47:37,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-13 18:47:37,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-13 18:47:38,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:38,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517542649] [2021-11-13 18:47:38,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517542649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:38,198 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:38,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:47:38,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685545264] [2021-11-13 18:47:38,199 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:38,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:47:38,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:38,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:47:38,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:47:38,201 INFO L87 Difference]: Start difference. First operand 828 states and 1173 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:47:40,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:40,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:40,604 INFO L93 Difference]: Finished difference Result 2430 states and 3442 transitions. [2021-11-13 18:47:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:47:40,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 183 [2021-11-13 18:47:40,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:40,617 INFO L225 Difference]: With dead ends: 2430 [2021-11-13 18:47:40,617 INFO L226 Difference]: Without dead ends: 1620 [2021-11-13 18:47:40,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:47:40,622 INFO L933 BasicCegarLoop]: 982 mSDtfsCounter, 482 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2241.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.52ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2281.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:40,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 2468 Invalid, 19 Unknown, 0 Unchecked, 8.52ms Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 2281.64ms Time] [2021-11-13 18:47:40,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2021-11-13 18:47:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1497. [2021-11-13 18:47:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1186 states have (on average 1.4207419898819562) internal successors, (1685), 1196 states have internal predecessors, (1685), 225 states have call successors, (225), 85 states have call predecessors, (225), 85 states have return successors, (225), 219 states have call predecessors, (225), 225 states have call successors, (225) [2021-11-13 18:47:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2135 transitions. [2021-11-13 18:47:40,717 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2135 transitions. Word has length 183 [2021-11-13 18:47:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:40,717 INFO L470 AbstractCegarLoop]: Abstraction has 1497 states and 2135 transitions. [2021-11-13 18:47:40,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:47:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2135 transitions. [2021-11-13 18:47:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-13 18:47:40,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:40,724 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:40,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:40,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:40,942 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:40,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash 370798123, now seen corresponding path program 1 times [2021-11-13 18:47:40,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:40,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451042370] [2021-11-13 18:47:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:40,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:40,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:40,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:40,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:47:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:42,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:47:42,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-13 18:47:43,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-13 18:47:44,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:44,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451042370] [2021-11-13 18:47:44,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451042370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:44,098 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:44,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-13 18:47:44,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068137425] [2021-11-13 18:47:44,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:44,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:47:44,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:47:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:44,101 INFO L87 Difference]: Start difference. First operand 1497 states and 2135 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 18:47:44,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:44,204 INFO L93 Difference]: Finished difference Result 2970 states and 4240 transitions. [2021-11-13 18:47:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:47:44,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 204 [2021-11-13 18:47:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:44,217 INFO L225 Difference]: With dead ends: 2970 [2021-11-13 18:47:44,218 INFO L226 Difference]: Without dead ends: 1497 [2021-11-13 18:47:44,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:47:44,223 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 432 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:44,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 498 Invalid, 15 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 18.98ms Time] [2021-11-13 18:47:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-13 18:47:44,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1497. [2021-11-13 18:47:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1186 states have (on average 1.3937605396290051) internal successors, (1653), 1196 states have internal predecessors, (1653), 225 states have call successors, (225), 85 states have call predecessors, (225), 85 states have return successors, (225), 219 states have call predecessors, (225), 225 states have call successors, (225) [2021-11-13 18:47:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2103 transitions. [2021-11-13 18:47:44,329 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2103 transitions. Word has length 204 [2021-11-13 18:47:44,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:44,331 INFO L470 AbstractCegarLoop]: Abstraction has 1497 states and 2103 transitions. [2021-11-13 18:47:44,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 18:47:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2103 transitions. [2021-11-13 18:47:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-13 18:47:44,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:44,339 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:44,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:44,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:44,562 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:44,563 INFO L85 PathProgramCache]: Analyzing trace with hash 158716901, now seen corresponding path program 1 times [2021-11-13 18:47:44,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:44,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641099941] [2021-11-13 18:47:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:44,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:44,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:44,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:44,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:47:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:46,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 18:47:46,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-13 18:47:46,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-13 18:47:47,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:47,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641099941] [2021-11-13 18:47:47,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641099941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:47,488 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:47,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-13 18:47:47,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390341650] [2021-11-13 18:47:47,490 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:47,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:47:47,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:47:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:47:47,494 INFO L87 Difference]: Start difference. First operand 1497 states and 2103 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 18:47:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:48,844 INFO L93 Difference]: Finished difference Result 4385 states and 6540 transitions. [2021-11-13 18:47:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:47:48,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 204 [2021-11-13 18:47:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:48,875 INFO L225 Difference]: With dead ends: 4385 [2021-11-13 18:47:48,875 INFO L226 Difference]: Without dead ends: 3651 [2021-11-13 18:47:48,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:47:48,880 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 2509 mSDsluCounter, 6258 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 709.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2563 SdHoareTripleChecker+Valid, 7139 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.85ms SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 832.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:48,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2563 Valid, 7139 Invalid, 490 Unknown, 0 Unchecked, 37.85ms Time], IncrementalHoareTripleChecker [379 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 832.27ms Time] [2021-11-13 18:47:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2021-11-13 18:47:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 1517. [2021-11-13 18:47:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1206 states have (on average 1.3872305140961858) internal successors, (1673), 1216 states have internal predecessors, (1673), 225 states have call successors, (225), 85 states have call predecessors, (225), 85 states have return successors, (225), 219 states have call predecessors, (225), 225 states have call successors, (225) [2021-11-13 18:47:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2123 transitions. [2021-11-13 18:47:49,130 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2123 transitions. Word has length 204 [2021-11-13 18:47:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:49,131 INFO L470 AbstractCegarLoop]: Abstraction has 1517 states and 2123 transitions. [2021-11-13 18:47:49,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 18:47:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2123 transitions. [2021-11-13 18:47:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-13 18:47:49,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:49,137 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:49,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:49,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:49,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1573980731, now seen corresponding path program 1 times [2021-11-13 18:47:49,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:49,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367624090] [2021-11-13 18:47:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:49,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:49,365 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:49,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:47:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:50,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:47:50,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-11-13 18:47:51,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-11-13 18:47:51,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:51,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367624090] [2021-11-13 18:47:51,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367624090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:47:51,983 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:47:51,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:47:51,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633710255] [2021-11-13 18:47:51,984 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:51,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:47:51,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:47:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:47:51,985 INFO L87 Difference]: Start difference. First operand 1517 states and 2123 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 18:47:54,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:47:55,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:47:55,137 INFO L93 Difference]: Finished difference Result 3970 states and 5682 transitions. [2021-11-13 18:47:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:47:55,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 211 [2021-11-13 18:47:55,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:47:55,156 INFO L225 Difference]: With dead ends: 3970 [2021-11-13 18:47:55,156 INFO L226 Difference]: Without dead ends: 2477 [2021-11-13 18:47:55,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:47:55,164 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 722 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 143 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2778.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.10ms SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2933.96ms IncrementalHoareTripleChecker+Time [2021-11-13 18:47:55,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 904 Invalid, 404 Unknown, 0 Unchecked, 7.10ms Time], IncrementalHoareTripleChecker [143 Valid, 260 Invalid, 1 Unknown, 0 Unchecked, 2933.96ms Time] [2021-11-13 18:47:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2021-11-13 18:47:55,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 2375. [2021-11-13 18:47:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 1986 states have (on average 1.4284994964753273) internal successors, (2837), 1996 states have internal predecessors, (2837), 257 states have call successors, (257), 131 states have call predecessors, (257), 131 states have return successors, (257), 251 states have call predecessors, (257), 257 states have call successors, (257) [2021-11-13 18:47:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3351 transitions. [2021-11-13 18:47:55,375 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3351 transitions. Word has length 211 [2021-11-13 18:47:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:47:55,376 INFO L470 AbstractCegarLoop]: Abstraction has 2375 states and 3351 transitions. [2021-11-13 18:47:55,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 4 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 18:47:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3351 transitions. [2021-11-13 18:47:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-13 18:47:55,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:47:55,383 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:47:55,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:47:55,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:47:55,597 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:47:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:47:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 574800503, now seen corresponding path program 1 times [2021-11-13 18:47:55,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:47:55,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701026832] [2021-11-13 18:47:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:47:55,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:47:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:47:55,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:47:55,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:47:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:47:57,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1795 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 18:47:57,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:47:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 34 proven. 12 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-11-13 18:47:58,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:47:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-11-13 18:47:59,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:47:59,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701026832] [2021-11-13 18:47:59,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701026832] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:47:59,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:47:59,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 23 [2021-11-13 18:47:59,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191650656] [2021-11-13 18:47:59,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:47:59,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:47:59,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:47:59,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:47:59,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:47:59,433 INFO L87 Difference]: Start difference. First operand 2375 states and 3351 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-13 18:48:03,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:03,480 INFO L93 Difference]: Finished difference Result 7175 states and 10578 transitions. [2021-11-13 18:48:03,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:48:03,483 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 210 [2021-11-13 18:48:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:03,522 INFO L225 Difference]: With dead ends: 7175 [2021-11-13 18:48:03,522 INFO L226 Difference]: Without dead ends: 4824 [2021-11-13 18:48:03,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2021-11-13 18:48:03,529 INFO L933 BasicCegarLoop]: 1183 mSDtfsCounter, 2499 mSDsluCounter, 8604 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1624.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2553 SdHoareTripleChecker+Valid, 9787 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.89ms SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1877.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:03,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2553 Valid, 9787 Invalid, 612 Unknown, 0 Unchecked, 36.89ms Time], IncrementalHoareTripleChecker [436 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1877.59ms Time] [2021-11-13 18:48:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2021-11-13 18:48:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 2369. [2021-11-13 18:48:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2369 states, 1980 states have (on average 1.4277777777777778) internal successors, (2827), 1992 states have internal predecessors, (2827), 257 states have call successors, (257), 131 states have call predecessors, (257), 131 states have return successors, (257), 249 states have call predecessors, (257), 257 states have call successors, (257) [2021-11-13 18:48:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 3341 transitions. [2021-11-13 18:48:03,845 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 3341 transitions. Word has length 210 [2021-11-13 18:48:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:03,850 INFO L470 AbstractCegarLoop]: Abstraction has 2369 states and 3341 transitions. [2021-11-13 18:48:03,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-13 18:48:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 3341 transitions. [2021-11-13 18:48:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-13 18:48:03,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:03,857 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:03,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:48:04,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:48:04,082 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:04,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1036613565, now seen corresponding path program 1 times [2021-11-13 18:48:04,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:48:04,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169154320] [2021-11-13 18:48:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:04,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:48:04,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:48:04,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:48:04,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:48:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:05,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:48:05,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-13 18:48:06,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:48:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-13 18:48:06,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:48:06,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169154320] [2021-11-13 18:48:06,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169154320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:06,785 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:06,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:48:06,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130779112] [2021-11-13 18:48:06,786 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:06,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:48:06,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:48:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:48:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:48:06,790 INFO L87 Difference]: Start difference. First operand 2369 states and 3341 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:48:08,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:10,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:10,415 INFO L93 Difference]: Finished difference Result 7066 states and 9767 transitions. [2021-11-13 18:48:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:48:10,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 218 [2021-11-13 18:48:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:10,448 INFO L225 Difference]: With dead ends: 7066 [2021-11-13 18:48:10,448 INFO L226 Difference]: Without dead ends: 4721 [2021-11-13 18:48:10,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:48:10,456 INFO L933 BasicCegarLoop]: 1102 mSDtfsCounter, 1504 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 218 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2864.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.39ms SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3002.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:10,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 4143 Invalid, 469 Unknown, 0 Unchecked, 15.39ms Time], IncrementalHoareTripleChecker [218 Valid, 250 Invalid, 1 Unknown, 0 Unchecked, 3002.13ms Time] [2021-11-13 18:48:10,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2021-11-13 18:48:10,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 2385. [2021-11-13 18:48:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 1996 states have (on average 1.4243486973947896) internal successors, (2843), 2004 states have internal predecessors, (2843), 257 states have call successors, (257), 131 states have call predecessors, (257), 131 states have return successors, (257), 249 states have call predecessors, (257), 257 states have call successors, (257) [2021-11-13 18:48:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3357 transitions. [2021-11-13 18:48:10,798 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3357 transitions. Word has length 218 [2021-11-13 18:48:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:10,825 INFO L470 AbstractCegarLoop]: Abstraction has 2385 states and 3357 transitions. [2021-11-13 18:48:10,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:48:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3357 transitions. [2021-11-13 18:48:10,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-13 18:48:10,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:10,832 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:10,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:48:11,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:48:11,058 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:11,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:11,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1978490053, now seen corresponding path program 1 times [2021-11-13 18:48:11,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:48:11,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911434821] [2021-11-13 18:48:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:11,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:48:11,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:48:11,064 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:48:11,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:48:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:48:12,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:48:12,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:48:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-13 18:48:13,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:48:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-13 18:48:14,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:48:14,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911434821] [2021-11-13 18:48:14,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911434821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:48:14,028 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:48:14,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:48:14,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552831585] [2021-11-13 18:48:14,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:48:14,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:48:14,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:48:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:48:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:48:14,030 INFO L87 Difference]: Start difference. First operand 2385 states and 3357 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-13 18:48:16,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:48:16,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:48:16,456 INFO L93 Difference]: Finished difference Result 3704 states and 5247 transitions. [2021-11-13 18:48:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:48:16,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 218 [2021-11-13 18:48:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:48:16,467 INFO L225 Difference]: With dead ends: 3704 [2021-11-13 18:48:16,468 INFO L226 Difference]: Without dead ends: 1217 [2021-11-13 18:48:16,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:48:16,474 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 486 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2256.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2300.58ms IncrementalHoareTripleChecker+Time [2021-11-13 18:48:16,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 893 Invalid, 55 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 1 Unknown, 0 Unchecked, 2300.58ms Time] [2021-11-13 18:48:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-13 18:48:16,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1139. [2021-11-13 18:48:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 961 states have (on average 1.4235171696149844) internal successors, (1368), 962 states have internal predecessors, (1368), 119 states have call successors, (119), 58 states have call predecessors, (119), 58 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2021-11-13 18:48:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1606 transitions. [2021-11-13 18:48:16,583 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1606 transitions. Word has length 218 [2021-11-13 18:48:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:48:16,586 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1606 transitions. [2021-11-13 18:48:16,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-13 18:48:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1606 transitions. [2021-11-13 18:48:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-13 18:48:16,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:48:16,596 INFO L514 BasicCegarLoop]: trace histogram [12, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:48:16,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:48:16,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:48:16,810 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:48:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:48:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash -74686153, now seen corresponding path program 1 times [2021-11-13 18:48:16,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:48:16,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213094363] [2021-11-13 18:48:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:48:16,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:48:16,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:48:16,813 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:48:16,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:48:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:48:38,652 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:48:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:49:00,936 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 18:49:00,937 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:49:00,938 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:49:01,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 18:49:01,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:49:01,154 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:49:01,160 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:49:01,263 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,264 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,265 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,265 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,266 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,266 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,266 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,267 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,267 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,267 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,268 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,268 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,268 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,269 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,269 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,269 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,270 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,270 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,270 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,270 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,272 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,272 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,272 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,273 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,273 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,273 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,274 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,274 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,274 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,275 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,275 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,275 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,276 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,276 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,276 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,277 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,277 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,277 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,280 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,280 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,282 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,282 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,283 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,283 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,283 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,284 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,284 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,284 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,285 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,285 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,285 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,286 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,286 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,286 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,287 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,287 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,287 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,288 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,288 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:49:01,288 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:49:01,386 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:49:01,390 INFO L158 Benchmark]: Toolchain (without parser) took 103682.85ms. Allocated memory was 69.2MB in the beginning and 293.6MB in the end (delta: 224.4MB). Free memory was 42.1MB in the beginning and 158.5MB in the end (delta: -116.4MB). Peak memory consumption was 215.4MB. Max. memory is 16.1GB. [2021-11-13 18:49:01,390 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 69.2MB. Free memory was 49.1MB in the beginning and 49.0MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:49:01,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1436.23ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 42.0MB in the beginning and 42.3MB in the end (delta: -288.9kB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2021-11-13 18:49:01,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 210.09ms. Allocated memory is still 96.5MB. Free memory was 42.3MB in the beginning and 52.6MB in the end (delta: -10.4MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-11-13 18:49:01,392 INFO L158 Benchmark]: Boogie Preprocessor took 193.23ms. Allocated memory is still 96.5MB. Free memory was 52.6MB in the beginning and 41.2MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 18:49:01,393 INFO L158 Benchmark]: RCFGBuilder took 5451.71ms. Allocated memory was 96.5MB in the beginning and 167.8MB in the end (delta: 71.3MB). Free memory was 40.8MB in the beginning and 55.9MB in the end (delta: -15.2MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2021-11-13 18:49:01,394 INFO L158 Benchmark]: TraceAbstraction took 96383.14ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 54.9MB in the beginning and 158.5MB in the end (delta: -103.6MB). Peak memory consumption was 130.2MB. Max. memory is 16.1GB. [2021-11-13 18:49:01,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 69.2MB. Free memory was 49.1MB in the beginning and 49.0MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1436.23ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 42.0MB in the beginning and 42.3MB in the end (delta: -288.9kB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 210.09ms. Allocated memory is still 96.5MB. Free memory was 42.3MB in the beginning and 52.6MB in the end (delta: -10.4MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 193.23ms. Allocated memory is still 96.5MB. Free memory was 52.6MB in the beginning and 41.2MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 5451.71ms. Allocated memory was 96.5MB in the beginning and 167.8MB in the end (delta: 71.3MB). Free memory was 40.8MB in the beginning and 55.9MB in the end (delta: -15.2MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. * TraceAbstraction took 96383.14ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 54.9MB in the beginning and 158.5MB in the end (delta: -103.6MB). Peak memory consumption was 130.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:49:01,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a41c6eae-a0bc-427c-b30a-4a03441ee7c9/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null