./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a --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 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:27:29,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:27:29,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:27:29,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:27:29,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:27:29,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:27:29,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:27:29,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:27:29,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:27:29,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:27:29,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:27:29,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:27:29,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:27:29,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:27:29,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:27:29,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:27:29,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:27:29,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:27:29,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:27:29,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:27:29,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:27:29,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:27:29,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:27:29,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:27:29,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:27:29,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:27:29,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:27:29,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:27:29,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:27:29,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:27:29,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:27:29,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:27:29,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:27:29,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:27:29,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:27:29,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:27:29,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:27:29,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:27:29,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:27:29,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:27:29,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:27:29,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 17:27:29,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:27:29,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:27:29,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:27:29,732 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:27:29,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:27:29,733 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:27:29,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:27:29,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:27:29,735 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:27:29,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:27:29,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:27:29,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:27:29,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:27:29,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:27:29,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:27:29,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:27:29,739 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:27:29,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:27:29,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:27:29,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:27:29,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:27:29,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:27:29,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:27:29,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:27:29,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:27:29,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:27:29,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:27:29,742 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:27:29,743 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:27:29,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:27:29,744 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_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f [2022-11-21 17:27:30,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:27:30,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:27:30,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:27:30,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:27:30,136 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:27:30,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-11-21 17:27:33,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:27:34,082 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:27:34,083 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-11-21 17:27:34,130 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/data/8340d2ca3/4790a462ec2d4a9bbd69e0837f7e6b68/FLAG2060a12d7 [2022-11-21 17:27:34,147 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/data/8340d2ca3/4790a462ec2d4a9bbd69e0837f7e6b68 [2022-11-21 17:27:34,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:27:34,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:27:34,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:27:34,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:27:34,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:27:34,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:27:34" (1/1) ... [2022-11-21 17:27:34,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6003a5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:34, skipping insertion in model container [2022-11-21 17:27:34,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:27:34" (1/1) ... [2022-11-21 17:27:34,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:27:34,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:27:35,484 WARN L237 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_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2022-11-21 17:27:36,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:27:36,226 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:27:36,383 WARN L237 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_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2022-11-21 17:27:36,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:27:36,802 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:27:36,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36 WrapperNode [2022-11-21 17:27:36,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:27:36,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:27:36,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:27:36,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:27:36,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:36,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,178 INFO L138 Inliner]: procedures = 178, calls = 1875, calls flagged for inlining = 81, calls inlined = 81, statements flattened = 3568 [2022-11-21 17:27:37,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:27:37,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:27:37,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:27:37,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:27:37,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:27:37,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:27:37,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:27:37,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:27:37,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (1/1) ... [2022-11-21 17:27:37,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:27:37,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:37,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:27:37,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:27:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-21 17:27:37,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-21 17:27:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 17:27:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-11-21 17:27:37,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-11-21 17:27:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-11-21 17:27:37,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-11-21 17:27:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2022-11-21 17:27:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2022-11-21 17:27:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2022-11-21 17:27:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2022-11-21 17:27:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-21 17:27:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 17:27:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-21 17:27:37,507 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-21 17:27:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-21 17:27:37,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-21 17:27:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:27:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_20 [2022-11-21 17:27:37,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_20 [2022-11-21 17:27:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-21 17:27:37,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-21 17:27:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-21 17:27:37,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-21 17:27:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-21 17:27:37,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-21 17:27:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-21 17:27:37,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-21 17:27:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-21 17:27:37,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-21 17:27:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-21 17:27:37,510 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-21 17:27:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-21 17:27:37,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-21 17:27:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-21 17:27:37,512 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-21 17:27:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_resume [2022-11-21 17:27:37,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_resume [2022-11-21 17:27:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure kstrdup [2022-11-21 17:27:37,514 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrdup [2022-11-21 17:27:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-11-21 17:27:37,514 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-11-21 17:27:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_reset_resume [2022-11-21 17:27:37,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_reset_resume [2022-11-21 17:27:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:27:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-21 17:27:37,515 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-21 17:27:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-21 17:27:37,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-21 17:27:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-21 17:27:37,516 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-21 17:27:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-21 17:27:37,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-21 17:27:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-21 17:27:37,517 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-21 17:27:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 17:27:37,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 17:27:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:27:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-21 17:27:37,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-21 17:27:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_free_buffers [2022-11-21 17:27:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_free_buffers [2022-11-21 17:27:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_disconnect [2022-11-21 17:27:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_disconnect [2022-11-21 17:27:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2022-11-21 17:27:37,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2022-11-21 17:27:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:27:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-21 17:27:37,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-21 17:27:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 17:27:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:27:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-21 17:27:37,524 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-21 17:27:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-11-21 17:27:37,525 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-11-21 17:27:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-21 17:27:37,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-21 17:27:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-21 17:27:37,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-21 17:27:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 17:27:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-21 17:27:37,527 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-21 17:27:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2022-11-21 17:27:37,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2022-11-21 17:27:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_16 [2022-11-21 17:27:37,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_16 [2022-11-21 17:27:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-11-21 17:27:37,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-11-21 17:27:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_probe [2022-11-21 17:27:37,530 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_probe [2022-11-21 17:27:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:27:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2022-11-21 17:27:37,530 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2022-11-21 17:27:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 17:27:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-11-21 17:27:37,531 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-11-21 17:27:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_open [2022-11-21 17:27:37,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_open [2022-11-21 17:27:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_12 [2022-11-21 17:27:37,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_12 [2022-11-21 17:27:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-21 17:27:37,533 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-21 17:27:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-21 17:27:37,534 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-21 17:27:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-21 17:27:37,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-21 17:27:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_irq [2022-11-21 17:27:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_irq [2022-11-21 17:27:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 17:27:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 17:27:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_pkt [2022-11-21 17:27:37,536 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_pkt [2022-11-21 17:27:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-21 17:27:37,536 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-21 17:27:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-11-21 17:27:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-11-21 17:27:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-21 17:27:37,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-21 17:27:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:27:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure nexio_read_data [2022-11-21 17:27:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure nexio_read_data [2022-11-21 17:27:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-21 17:27:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-21 17:27:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-21 17:27:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-21 17:27:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-21 17:27:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:27:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:27:37,552 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-11-21 17:27:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-11-21 17:27:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_multi [2022-11-21 17:27:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_multi [2022-11-21 17:27:38,230 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:27:38,233 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:27:38,520 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-21 17:27:42,524 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-21 17:27:43,712 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:27:43,727 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:27:43,728 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:27:43,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:27:43 BoogieIcfgContainer [2022-11-21 17:27:43,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:27:43,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:27:43,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:27:43,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:27:43,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:27:34" (1/3) ... [2022-11-21 17:27:43,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bd1035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:27:43, skipping insertion in model container [2022-11-21 17:27:43,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:36" (2/3) ... [2022-11-21 17:27:43,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67bd1035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:27:43, skipping insertion in model container [2022-11-21 17:27:43,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:27:43" (3/3) ... [2022-11-21 17:27:43,741 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-11-21 17:27:43,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:27:43,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:27:43,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:27:43,880 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e6019f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:27:43,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:27:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 961 states, 696 states have (on average 1.3563218390804597) internal successors, (944), 715 states have internal predecessors, (944), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) [2022-11-21 17:27:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 17:27:43,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:43,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:43,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:43,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:43,924 INFO L85 PathProgramCache]: Analyzing trace with hash -182321689, now seen corresponding path program 1 times [2022-11-21 17:27:43,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:43,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593321967] [2022-11-21 17:27:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:43,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:44,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:27:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:27:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:44,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:44,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593321967] [2022-11-21 17:27:44,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593321967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:44,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:44,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:27:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715753952] [2022-11-21 17:27:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:44,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:27:44,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:44,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:27:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:27:44,942 INFO L87 Difference]: Start difference. First operand has 961 states, 696 states have (on average 1.3563218390804597) internal successors, (944), 715 states have internal predecessors, (944), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:27:50,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:27:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:59,369 INFO L93 Difference]: Finished difference Result 3544 states and 5272 transitions. [2022-11-21 17:27:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:27:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-21 17:27:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:59,439 INFO L225 Difference]: With dead ends: 3544 [2022-11-21 17:27:59,439 INFO L226 Difference]: Without dead ends: 2564 [2022-11-21 17:27:59,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:27:59,471 INFO L413 NwaCegarLoop]: 1350 mSDtfsCounter, 3202 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 1476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3385 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1476 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:59,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3385 Valid, 3506 Invalid, 3955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1476 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-11-21 17:27:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-11-21 17:27:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1863. [2022-11-21 17:27:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1359 states have (on average 1.345842531272995) internal successors, (1829), 1376 states have internal predecessors, (1829), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-21 17:27:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2609 transitions. [2022-11-21 17:27:59,748 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2609 transitions. Word has length 28 [2022-11-21 17:27:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:59,749 INFO L495 AbstractCegarLoop]: Abstraction has 1863 states and 2609 transitions. [2022-11-21 17:27:59,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:27:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2609 transitions. [2022-11-21 17:27:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-21 17:27:59,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:59,761 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:27:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:27:59,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1624976195, now seen corresponding path program 1 times [2022-11-21 17:27:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:59,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579686660] [2022-11-21 17:27:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:59,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:28:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:00,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:28:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:28:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:28:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:00,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579686660] [2022-11-21 17:28:00,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579686660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:00,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:00,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:28:00,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167149326] [2022-11-21 17:28:00,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:00,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:28:00,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:00,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:28:00,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:28:00,706 INFO L87 Difference]: Start difference. First operand 1863 states and 2609 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:28:06,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:28:11,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:28:17,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:17,931 INFO L93 Difference]: Finished difference Result 6954 states and 10409 transitions. [2022-11-21 17:28:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:28:17,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-21 17:28:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:17,969 INFO L225 Difference]: With dead ends: 6954 [2022-11-21 17:28:17,969 INFO L226 Difference]: Without dead ends: 5105 [2022-11-21 17:28:17,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:28:17,982 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 3318 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 1576 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3478 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 4054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1576 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:17,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3478 Valid, 3409 Invalid, 4054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1576 Valid, 2477 Invalid, 1 Unknown, 0 Unchecked, 16.5s Time] [2022-11-21 17:28:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5105 states. [2022-11-21 17:28:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5105 to 4254. [2022-11-21 17:28:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 3107 states have (on average 1.3299002252977148) internal successors, (4132), 3140 states have internal predecessors, (4132), 851 states have call successors, (851), 220 states have call predecessors, (851), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-11-21 17:28:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 6194 transitions. [2022-11-21 17:28:18,321 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 6194 transitions. Word has length 38 [2022-11-21 17:28:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:18,323 INFO L495 AbstractCegarLoop]: Abstraction has 4254 states and 6194 transitions. [2022-11-21 17:28:18,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:28:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 6194 transitions. [2022-11-21 17:28:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 17:28:18,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:18,329 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:28:18,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:28:18,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:18,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:18,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1165843336, now seen corresponding path program 1 times [2022-11-21 17:28:18,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:18,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644734173] [2022-11-21 17:28:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:28:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:28:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:19,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:28:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:28:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:19,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644734173] [2022-11-21 17:28:19,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644734173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:19,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:19,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:28:19,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370077685] [2022-11-21 17:28:19,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:19,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:28:19,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:19,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:28:19,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:28:19,166 INFO L87 Difference]: Start difference. First operand 4254 states and 6194 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:28:21,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:28:23,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:28:25,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:28:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:30,555 INFO L93 Difference]: Finished difference Result 5096 states and 7624 transitions. [2022-11-21 17:28:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:28:30,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-21 17:28:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:30,593 INFO L225 Difference]: With dead ends: 5096 [2022-11-21 17:28:30,593 INFO L226 Difference]: Without dead ends: 5093 [2022-11-21 17:28:30,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:28:30,605 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 2307 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:30,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 2016 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-11-21 17:28:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2022-11-21 17:28:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 4253. [2022-11-21 17:28:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 3107 states have (on average 1.3295783714193756) internal successors, (4131), 3139 states have internal predecessors, (4131), 850 states have call successors, (850), 220 states have call predecessors, (850), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-11-21 17:28:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 6192 transitions. [2022-11-21 17:28:30,995 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 6192 transitions. Word has length 39 [2022-11-21 17:28:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:30,996 INFO L495 AbstractCegarLoop]: Abstraction has 4253 states and 6192 transitions. [2022-11-21 17:28:30,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:28:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 6192 transitions. [2022-11-21 17:28:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-21 17:28:31,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:31,001 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:28:31,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:28:31,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:31,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:31,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1781898010, now seen corresponding path program 1 times [2022-11-21 17:28:31,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:31,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290815285] [2022-11-21 17:28:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:31,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:28:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:31,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:28:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:31,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:28:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:28:31,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:31,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290815285] [2022-11-21 17:28:31,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290815285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:31,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:31,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:28:31,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794294002] [2022-11-21 17:28:31,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:31,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:28:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:28:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:28:31,300 INFO L87 Difference]: Start difference. First operand 4253 states and 6192 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:28:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:39,236 INFO L93 Difference]: Finished difference Result 5095 states and 7622 transitions. [2022-11-21 17:28:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:28:39,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-21 17:28:39,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:39,275 INFO L225 Difference]: With dead ends: 5095 [2022-11-21 17:28:39,275 INFO L226 Difference]: Without dead ends: 5092 [2022-11-21 17:28:39,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:28:39,281 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 2266 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:39,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 2044 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-21 17:28:39,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2022-11-21 17:28:39,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 4252. [2022-11-21 17:28:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4252 states, 3107 states have (on average 1.3292565175410365) internal successors, (4130), 3138 states have internal predecessors, (4130), 849 states have call successors, (849), 220 states have call predecessors, (849), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-11-21 17:28:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 6190 transitions. [2022-11-21 17:28:39,719 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 6190 transitions. Word has length 40 [2022-11-21 17:28:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:39,721 INFO L495 AbstractCegarLoop]: Abstraction has 4252 states and 6190 transitions. [2022-11-21 17:28:39,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:28:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 6190 transitions. [2022-11-21 17:28:39,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 17:28:39,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:39,724 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:28:39,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:28:39,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:39,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:39,725 INFO L85 PathProgramCache]: Analyzing trace with hash 595248443, now seen corresponding path program 1 times [2022-11-21 17:28:39,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:39,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387391252] [2022-11-21 17:28:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:39,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:28:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:28:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:28:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:28:40,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:40,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387391252] [2022-11-21 17:28:40,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387391252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:40,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:40,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:28:40,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558751828] [2022-11-21 17:28:40,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:40,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:28:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:28:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:28:40,111 INFO L87 Difference]: Start difference. First operand 4252 states and 6190 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:28:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:52,215 INFO L93 Difference]: Finished difference Result 14371 states and 22056 transitions. [2022-11-21 17:28:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:28:52,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-21 17:28:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:52,291 INFO L225 Difference]: With dead ends: 14371 [2022-11-21 17:28:52,291 INFO L226 Difference]: Without dead ends: 10133 [2022-11-21 17:28:52,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:28:52,326 INFO L413 NwaCegarLoop]: 1281 mSDtfsCounter, 3209 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 1521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3370 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 3879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1521 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:52,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3370 Valid, 3502 Invalid, 3879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1521 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-21 17:28:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10133 states. [2022-11-21 17:28:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10133 to 8711. [2022-11-21 17:28:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8711 states, 6367 states have (on average 1.3290403643788284) internal successors, (8462), 6427 states have internal predecessors, (8462), 1726 states have call successors, (1726), 435 states have call predecessors, (1726), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2022-11-21 17:28:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8711 states to 8711 states and 13101 transitions. [2022-11-21 17:28:53,237 INFO L78 Accepts]: Start accepts. Automaton has 8711 states and 13101 transitions. Word has length 41 [2022-11-21 17:28:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:53,238 INFO L495 AbstractCegarLoop]: Abstraction has 8711 states and 13101 transitions. [2022-11-21 17:28:53,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:28:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8711 states and 13101 transitions. [2022-11-21 17:28:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-21 17:28:53,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:53,243 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:28:53,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:28:53,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1272349321, now seen corresponding path program 1 times [2022-11-21 17:28:53,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:53,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580317787] [2022-11-21 17:28:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:53,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:28:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:53,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:28:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:28:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:28:53,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:53,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580317787] [2022-11-21 17:28:53,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580317787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:28:53,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:28:53,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:28:53,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272387552] [2022-11-21 17:28:53,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:28:53,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:28:53,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:53,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:28:53,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:28:53,621 INFO L87 Difference]: Start difference. First operand 8711 states and 13101 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:29:01,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:01,667 INFO L93 Difference]: Finished difference Result 10101 states and 15485 transitions. [2022-11-21 17:29:01,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:29:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-21 17:29:01,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:01,756 INFO L225 Difference]: With dead ends: 10101 [2022-11-21 17:29:01,757 INFO L226 Difference]: Without dead ends: 10089 [2022-11-21 17:29:01,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:29:01,765 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 2290 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 961 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 961 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:01,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2414 Valid, 1988 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [961 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-21 17:29:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10089 states. [2022-11-21 17:29:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10089 to 8701. [2022-11-21 17:29:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8701 states, 6358 states have (on average 1.328719723183391) internal successors, (8448), 6417 states have internal predecessors, (8448), 1725 states have call successors, (1725), 435 states have call predecessors, (1725), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2022-11-21 17:29:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8701 states to 8701 states and 13086 transitions. [2022-11-21 17:29:02,801 INFO L78 Accepts]: Start accepts. Automaton has 8701 states and 13086 transitions. Word has length 42 [2022-11-21 17:29:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:02,803 INFO L495 AbstractCegarLoop]: Abstraction has 8701 states and 13086 transitions. [2022-11-21 17:29:02,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:29:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand 8701 states and 13086 transitions. [2022-11-21 17:29:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-21 17:29:02,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:02,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:29:02,814 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:02,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:02,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1928894233, now seen corresponding path program 1 times [2022-11-21 17:29:02,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:02,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329201460] [2022-11-21 17:29:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:02,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:29:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:29:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 17:29:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 17:29:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 17:29:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 17:29:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 17:29:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 17:29:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:29:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:29:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:29:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:29:03,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:03,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329201460] [2022-11-21 17:29:03,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329201460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:03,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:03,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:29:03,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132874176] [2022-11-21 17:29:03,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:03,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:29:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:29:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:29:03,304 INFO L87 Difference]: Start difference. First operand 8701 states and 13086 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 8 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:29:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:23,969 INFO L93 Difference]: Finished difference Result 28985 states and 50125 transitions. [2022-11-21 17:29:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 17:29:23,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 8 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-11-21 17:29:23,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:24,189 INFO L225 Difference]: With dead ends: 28985 [2022-11-21 17:29:24,189 INFO L226 Difference]: Without dead ends: 20298 [2022-11-21 17:29:24,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:29:24,244 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 6508 mSDsluCounter, 4001 mSDsCounter, 0 mSdLazyCounter, 5245 mSolverCounterSat, 4719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6611 SdHoareTripleChecker+Valid, 5235 SdHoareTripleChecker+Invalid, 9964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4719 IncrementalHoareTripleChecker+Valid, 5245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:24,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6611 Valid, 5235 Invalid, 9964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4719 Valid, 5245 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2022-11-21 17:29:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20298 states. [2022-11-21 17:29:26,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20298 to 11645. [2022-11-21 17:29:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11645 states, 8436 states have (on average 1.3110478899952585) internal successors, (11060), 8463 states have internal predecessors, (11060), 2337 states have call successors, (2337), 437 states have call predecessors, (2337), 871 states have return successors, (5025), 2784 states have call predecessors, (5025), 2331 states have call successors, (5025) [2022-11-21 17:29:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11645 states to 11645 states and 18422 transitions. [2022-11-21 17:29:26,318 INFO L78 Accepts]: Start accepts. Automaton has 11645 states and 18422 transitions. Word has length 93 [2022-11-21 17:29:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:26,319 INFO L495 AbstractCegarLoop]: Abstraction has 11645 states and 18422 transitions. [2022-11-21 17:29:26,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (15), 8 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:29:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 11645 states and 18422 transitions. [2022-11-21 17:29:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-21 17:29:26,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:26,328 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:26,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:29:26,329 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:26,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:26,330 INFO L85 PathProgramCache]: Analyzing trace with hash 252322070, now seen corresponding path program 1 times [2022-11-21 17:29:26,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:26,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377551980] [2022-11-21 17:29:26,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:26,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:29:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:29:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:29:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 17:29:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:29:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:29:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:29:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:29:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 17:29:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:29:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 17:29:26,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:26,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377551980] [2022-11-21 17:29:26,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377551980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:26,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:26,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:29:26,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168177941] [2022-11-21 17:29:26,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:26,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:29:26,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:29:26,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:29:26,823 INFO L87 Difference]: Start difference. First operand 11645 states and 18422 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 17:29:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:39,786 INFO L93 Difference]: Finished difference Result 19716 states and 31699 transitions. [2022-11-21 17:29:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:29:39,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2022-11-21 17:29:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:39,841 INFO L225 Difference]: With dead ends: 19716 [2022-11-21 17:29:39,842 INFO L226 Difference]: Without dead ends: 8092 [2022-11-21 17:29:39,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:29:39,900 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 2392 mSDsluCounter, 3390 mSDsCounter, 0 mSdLazyCounter, 3010 mSolverCounterSat, 1454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 4445 SdHoareTripleChecker+Invalid, 4464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1454 IncrementalHoareTripleChecker+Valid, 3010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:39,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 4445 Invalid, 4464 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1454 Valid, 3010 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2022-11-21 17:29:39,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8092 states. [2022-11-21 17:29:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8092 to 5911. [2022-11-21 17:29:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5911 states, 4290 states have (on average 1.3104895104895105) internal successors, (5622), 4305 states have internal predecessors, (5622), 1177 states have call successors, (1177), 227 states have call predecessors, (1177), 443 states have return successors, (2518), 1398 states have call predecessors, (2518), 1171 states have call successors, (2518) [2022-11-21 17:29:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5911 states to 5911 states and 9317 transitions. [2022-11-21 17:29:40,755 INFO L78 Accepts]: Start accepts. Automaton has 5911 states and 9317 transitions. Word has length 107 [2022-11-21 17:29:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:40,756 INFO L495 AbstractCegarLoop]: Abstraction has 5911 states and 9317 transitions. [2022-11-21 17:29:40,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 17:29:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand 5911 states and 9317 transitions. [2022-11-21 17:29:40,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-21 17:29:40,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:40,767 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:40,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:29:40,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:40,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1354886695, now seen corresponding path program 1 times [2022-11-21 17:29:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:40,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477831619] [2022-11-21 17:29:40,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:40,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:29:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:29:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:29:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 17:29:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:29:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 17:29:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:29:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:29:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 17:29:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:29:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 17:29:41,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:41,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477831619] [2022-11-21 17:29:41,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477831619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:41,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:41,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:29:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719443695] [2022-11-21 17:29:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:41,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:29:41,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:29:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:29:41,224 INFO L87 Difference]: Start difference. First operand 5911 states and 9317 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:29:56,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:29:58,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:30:07,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:30:07,703 INFO L93 Difference]: Finished difference Result 21777 states and 35361 transitions. [2022-11-21 17:30:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:30:07,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2022-11-21 17:30:07,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:30:07,796 INFO L225 Difference]: With dead ends: 21777 [2022-11-21 17:30:07,796 INFO L226 Difference]: Without dead ends: 15901 [2022-11-21 17:30:07,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:30:07,831 INFO L413 NwaCegarLoop]: 1761 mSDtfsCounter, 4131 mSDsluCounter, 4773 mSDsCounter, 0 mSdLazyCounter, 5269 mSolverCounterSat, 2869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4307 SdHoareTripleChecker+Valid, 6534 SdHoareTripleChecker+Invalid, 8138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2869 IncrementalHoareTripleChecker+Valid, 5269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:30:07,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4307 Valid, 6534 Invalid, 8138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2869 Valid, 5269 Invalid, 0 Unknown, 0 Unchecked, 24.2s Time] [2022-11-21 17:30:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15901 states. [2022-11-21 17:30:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15901 to 11549. [2022-11-21 17:30:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11549 states, 8364 states have (on average 1.3078670492587279) internal successors, (10939), 8391 states have internal predecessors, (10939), 2309 states have call successors, (2309), 441 states have call predecessors, (2309), 875 states have return successors, (4881), 2756 states have call predecessors, (4881), 2303 states have call successors, (4881) [2022-11-21 17:30:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11549 states to 11549 states and 18129 transitions. [2022-11-21 17:30:09,278 INFO L78 Accepts]: Start accepts. Automaton has 11549 states and 18129 transitions. Word has length 106 [2022-11-21 17:30:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:30:09,279 INFO L495 AbstractCegarLoop]: Abstraction has 11549 states and 18129 transitions. [2022-11-21 17:30:09,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:30:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11549 states and 18129 transitions. [2022-11-21 17:30:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-21 17:30:09,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:30:09,284 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:09,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:30:09,284 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:30:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1671752461, now seen corresponding path program 1 times [2022-11-21 17:30:09,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:09,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970183989] [2022-11-21 17:30:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:30:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:30:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:30:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:30:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:30:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:30:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 17:30:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 17:30:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 17:30:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-21 17:30:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:09,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970183989] [2022-11-21 17:30:09,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970183989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:09,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:09,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:30:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023286488] [2022-11-21 17:30:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:09,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:30:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:09,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:30:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:30:09,748 INFO L87 Difference]: Start difference. First operand 11549 states and 18129 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 17:30:14,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:30:20,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:30:38,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:30:38,651 INFO L93 Difference]: Finished difference Result 36451 states and 59212 transitions. [2022-11-21 17:30:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:30:38,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-11-21 17:30:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:30:38,801 INFO L225 Difference]: With dead ends: 36451 [2022-11-21 17:30:38,802 INFO L226 Difference]: Without dead ends: 24937 [2022-11-21 17:30:38,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:30:38,865 INFO L413 NwaCegarLoop]: 1919 mSDtfsCounter, 4159 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 5601 mSolverCounterSat, 2563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4368 SdHoareTripleChecker+Valid, 6913 SdHoareTripleChecker+Invalid, 8164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2563 IncrementalHoareTripleChecker+Valid, 5601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:30:38,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4368 Valid, 6913 Invalid, 8164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2563 Valid, 5601 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2022-11-21 17:30:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24937 states. [2022-11-21 17:30:40,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24937 to 17187. [2022-11-21 17:30:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17187 states, 12438 states have (on average 1.307284129281235) internal successors, (16260), 12477 states have internal predecessors, (16260), 3441 states have call successors, (3441), 655 states have call predecessors, (3441), 1307 states have return successors, (7244), 4114 states have call predecessors, (7244), 3435 states have call successors, (7244) [2022-11-21 17:30:41,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17187 states to 17187 states and 26945 transitions. [2022-11-21 17:30:41,340 INFO L78 Accepts]: Start accepts. Automaton has 17187 states and 26945 transitions. Word has length 132 [2022-11-21 17:30:41,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:30:41,342 INFO L495 AbstractCegarLoop]: Abstraction has 17187 states and 26945 transitions. [2022-11-21 17:30:41,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 17:30:41,342 INFO L276 IsEmpty]: Start isEmpty. Operand 17187 states and 26945 transitions. [2022-11-21 17:30:41,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-21 17:30:41,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:30:41,360 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:41,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:30:41,361 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:30:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:41,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1447596693, now seen corresponding path program 1 times [2022-11-21 17:30:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:30:41,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599551099] [2022-11-21 17:30:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:30:41,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:30:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:30:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:30:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:30:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:30:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 17:30:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:30:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 17:30:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 17:30:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 17:30:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 17:30:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 17:30:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:30:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:30:42,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:42,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599551099] [2022-11-21 17:30:42,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599551099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:30:42,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:30:42,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:30:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308284774] [2022-11-21 17:30:42,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:30:42,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:30:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:30:42,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:30:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:30:42,514 INFO L87 Difference]: Start difference. First operand 17187 states and 26945 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 17:31:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:30,990 INFO L93 Difference]: Finished difference Result 59072 states and 103288 transitions. [2022-11-21 17:31:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 17:31:30,991 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-11-21 17:31:30,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:31,328 INFO L225 Difference]: With dead ends: 59072 [2022-11-21 17:31:31,328 INFO L226 Difference]: Without dead ends: 41920 [2022-11-21 17:31:31,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=443, Invalid=1537, Unknown=0, NotChecked=0, Total=1980 [2022-11-21 17:31:31,435 INFO L413 NwaCegarLoop]: 2069 mSDtfsCounter, 8940 mSDsluCounter, 10290 mSDsCounter, 0 mSdLazyCounter, 13527 mSolverCounterSat, 9501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9147 SdHoareTripleChecker+Valid, 12359 SdHoareTripleChecker+Invalid, 23028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 9501 IncrementalHoareTripleChecker+Valid, 13527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:31,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9147 Valid, 12359 Invalid, 23028 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [9501 Valid, 13527 Invalid, 0 Unknown, 0 Unchecked, 41.3s Time] [2022-11-21 17:31:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41920 states. [2022-11-21 17:31:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41920 to 17203. [2022-11-21 17:31:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17203 states, 12450 states have (on average 1.306987951807229) internal successors, (16272), 12489 states have internal predecessors, (16272), 3441 states have call successors, (3441), 655 states have call predecessors, (3441), 1311 states have return successors, (7252), 4118 states have call predecessors, (7252), 3435 states have call successors, (7252) [2022-11-21 17:31:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17203 states to 17203 states and 26965 transitions. [2022-11-21 17:31:34,517 INFO L78 Accepts]: Start accepts. Automaton has 17203 states and 26965 transitions. Word has length 139 [2022-11-21 17:31:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:34,518 INFO L495 AbstractCegarLoop]: Abstraction has 17203 states and 26965 transitions. [2022-11-21 17:31:34,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 17:31:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 17203 states and 26965 transitions. [2022-11-21 17:31:34,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-21 17:31:34,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:34,524 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:34,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:31:34,525 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:34,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:34,525 INFO L85 PathProgramCache]: Analyzing trace with hash 957613708, now seen corresponding path program 1 times [2022-11-21 17:31:34,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:34,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339229987] [2022-11-21 17:31:34,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:34,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:31:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:31:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:31:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:31:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:31:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:31:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:31:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 17:31:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 17:31:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 17:31:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 17:31:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 17:31:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:31:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 17:31:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:31:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:31:35,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:35,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339229987] [2022-11-21 17:31:35,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339229987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:35,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:35,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 17:31:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315061953] [2022-11-21 17:31:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:35,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:31:35,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:31:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:31:35,266 INFO L87 Difference]: Start difference. First operand 17203 states and 26965 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 17:31:41,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:31:43,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:31:56,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:31:59,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:32:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:31,023 INFO L93 Difference]: Finished difference Result 59116 states and 103344 transitions. [2022-11-21 17:32:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-21 17:32:31,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2022-11-21 17:32:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:31,422 INFO L225 Difference]: With dead ends: 59116 [2022-11-21 17:32:31,422 INFO L226 Difference]: Without dead ends: 41948 [2022-11-21 17:32:31,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=443, Invalid=1537, Unknown=0, NotChecked=0, Total=1980 [2022-11-21 17:32:31,494 INFO L413 NwaCegarLoop]: 2078 mSDtfsCounter, 8696 mSDsluCounter, 11585 mSDsCounter, 0 mSdLazyCounter, 14858 mSolverCounterSat, 9099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8899 SdHoareTripleChecker+Valid, 13663 SdHoareTripleChecker+Invalid, 23957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 9099 IncrementalHoareTripleChecker+Valid, 14858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:31,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8899 Valid, 13663 Invalid, 23957 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [9099 Valid, 14858 Invalid, 0 Unknown, 0 Unchecked, 47.9s Time] [2022-11-21 17:32:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41948 states. [2022-11-21 17:32:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41948 to 17203. [2022-11-21 17:32:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17203 states, 12450 states have (on average 1.306987951807229) internal successors, (16272), 12489 states have internal predecessors, (16272), 3441 states have call successors, (3441), 655 states have call predecessors, (3441), 1311 states have return successors, (7252), 4118 states have call predecessors, (7252), 3435 states have call successors, (7252) [2022-11-21 17:32:34,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17203 states to 17203 states and 26965 transitions. [2022-11-21 17:32:34,249 INFO L78 Accepts]: Start accepts. Automaton has 17203 states and 26965 transitions. Word has length 143 [2022-11-21 17:32:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:34,250 INFO L495 AbstractCegarLoop]: Abstraction has 17203 states and 26965 transitions. [2022-11-21 17:32:34,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 17:32:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17203 states and 26965 transitions. [2022-11-21 17:32:34,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-21 17:32:34,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:34,254 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:34,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:32:34,255 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:34,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash -584119533, now seen corresponding path program 1 times [2022-11-21 17:32:34,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:34,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755916981] [2022-11-21 17:32:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:34,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:32:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:32:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:32:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:32:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:32:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:32:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 17:32:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:32:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:32:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 17:32:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:32:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:32:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 17:32:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:32:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:32:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:32:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 17:32:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 17:32:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:32:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 17:32:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 17:32:35,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:35,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755916981] [2022-11-21 17:32:35,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755916981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:32:35,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241999627] [2022-11-21 17:32:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:35,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:32:35,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:32:36,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:32:36,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:32:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:37,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-21 17:32:37,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 17:32:37,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 17:32:38,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241999627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:32:38,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:32:38,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-11-21 17:32:38,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122413279] [2022-11-21 17:32:38,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:32:38,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:32:38,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:32:38,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:32:38,218 INFO L87 Difference]: Start difference. First operand 17203 states and 26965 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 13 states have internal predecessors, (166), 4 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (36), 11 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-21 17:33:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:33:14,816 INFO L93 Difference]: Finished difference Result 41360 states and 71104 transitions. [2022-11-21 17:33:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:33:14,817 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 13 states have internal predecessors, (166), 4 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (36), 11 states have call predecessors, (36), 4 states have call successors, (36) Word has length 169 [2022-11-21 17:33:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:33:14,936 INFO L225 Difference]: With dead ends: 41360 [2022-11-21 17:33:14,936 INFO L226 Difference]: Without dead ends: 24168 [2022-11-21 17:33:15,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=190, Invalid=1216, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 17:33:15,061 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 2021 mSDsluCounter, 14818 mSDsCounter, 0 mSdLazyCounter, 10319 mSolverCounterSat, 1329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 15840 SdHoareTripleChecker+Invalid, 11648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1329 IncrementalHoareTripleChecker+Valid, 10319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:33:15,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 15840 Invalid, 11648 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1329 Valid, 10319 Invalid, 0 Unknown, 0 Unchecked, 32.0s Time] [2022-11-21 17:33:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24168 states. [2022-11-21 17:33:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24168 to 17371. [2022-11-21 17:33:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17371 states, 12570 states have (on average 1.3040572792362768) internal successors, (16392), 12609 states have internal predecessors, (16392), 3453 states have call successors, (3453), 655 states have call predecessors, (3453), 1347 states have return successors, (7444), 4166 states have call predecessors, (7444), 3447 states have call successors, (7444) [2022-11-21 17:33:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17371 states to 17371 states and 27289 transitions. [2022-11-21 17:33:17,300 INFO L78 Accepts]: Start accepts. Automaton has 17371 states and 27289 transitions. Word has length 169 [2022-11-21 17:33:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:33:17,301 INFO L495 AbstractCegarLoop]: Abstraction has 17371 states and 27289 transitions. [2022-11-21 17:33:17,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 13 states have internal predecessors, (166), 4 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (36), 11 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-21 17:33:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17371 states and 27289 transitions. [2022-11-21 17:33:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-21 17:33:17,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:33:17,308 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:33:17,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:33:17,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 17:33:17,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:33:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:33:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1499653103, now seen corresponding path program 1 times [2022-11-21 17:33:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:33:17,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413806186] [2022-11-21 17:33:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:33:17,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:33:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:33:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:33:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:33:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 17:33:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:33:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 17:33:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 17:33:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:33:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 17:33:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 17:33:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:19,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 17:33:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-21 17:33:19,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:33:19,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413806186] [2022-11-21 17:33:19,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413806186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:33:19,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:33:19,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:33:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917844656] [2022-11-21 17:33:19,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:33:19,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:33:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:33:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:33:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:33:19,034 INFO L87 Difference]: Start difference. First operand 17371 states and 27289 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-21 17:33:22,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:33:34,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:33:34,734 INFO L93 Difference]: Finished difference Result 41480 states and 71062 transitions. [2022-11-21 17:33:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:33:34,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 187 [2022-11-21 17:33:34,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:33:34,883 INFO L225 Difference]: With dead ends: 41480 [2022-11-21 17:33:34,883 INFO L226 Difference]: Without dead ends: 24144 [2022-11-21 17:33:35,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:33:35,022 INFO L413 NwaCegarLoop]: 1028 mSDtfsCounter, 2741 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 1774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2851 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 4335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1774 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:33:35,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2851 Valid, 4103 Invalid, 4335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1774 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-11-21 17:33:35,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24144 states. [2022-11-21 17:33:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24144 to 17395. [2022-11-21 17:33:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17395 states, 12594 states have (on average 1.303477846593616) internal successors, (16416), 12633 states have internal predecessors, (16416), 3453 states have call successors, (3453), 655 states have call predecessors, (3453), 1347 states have return successors, (7444), 4166 states have call predecessors, (7444), 3447 states have call successors, (7444) [2022-11-21 17:33:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17395 states to 17395 states and 27313 transitions. [2022-11-21 17:33:37,986 INFO L78 Accepts]: Start accepts. Automaton has 17395 states and 27313 transitions. Word has length 187 [2022-11-21 17:33:37,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:33:37,986 INFO L495 AbstractCegarLoop]: Abstraction has 17395 states and 27313 transitions. [2022-11-21 17:33:37,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-21 17:33:37,987 INFO L276 IsEmpty]: Start isEmpty. Operand 17395 states and 27313 transitions. [2022-11-21 17:33:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-21 17:33:37,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:33:37,992 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:33:37,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:33:37,993 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:33:37,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:33:37,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1870745108, now seen corresponding path program 1 times [2022-11-21 17:33:37,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:33:37,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346991237] [2022-11-21 17:33:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:33:37,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:33:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:33:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:33:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:33:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:33:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:33:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:33:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 17:33:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 17:33:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:33:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:33:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 17:33:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 17:33:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:33:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:33:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 17:33:39,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:33:39,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346991237] [2022-11-21 17:33:39,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346991237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:33:39,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:33:39,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 17:33:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371034649] [2022-11-21 17:33:39,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:33:39,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:33:39,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:33:39,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:33:39,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:33:39,909 INFO L87 Difference]: Start difference. First operand 17395 states and 27313 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-21 17:33:43,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:33:47,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:33:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:33:58,017 INFO L93 Difference]: Finished difference Result 41462 states and 69584 transitions. [2022-11-21 17:33:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:33:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 194 [2022-11-21 17:33:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:33:58,110 INFO L225 Difference]: With dead ends: 41462 [2022-11-21 17:33:58,110 INFO L226 Difference]: Without dead ends: 24102 [2022-11-21 17:33:58,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:33:58,172 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 1734 mSDsluCounter, 4071 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 5072 SdHoareTripleChecker+Invalid, 4204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:33:58,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1843 Valid, 5072 Invalid, 4204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [899 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2022-11-21 17:33:58,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24102 states. [2022-11-21 17:34:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24102 to 17455. [2022-11-21 17:34:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17455 states, 12642 states have (on average 1.3032747982914097) internal successors, (16476), 12669 states have internal predecessors, (16476), 3465 states have call successors, (3465), 655 states have call predecessors, (3465), 1347 states have return successors, (7456), 4190 states have call predecessors, (7456), 3459 states have call successors, (7456) [2022-11-21 17:34:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17455 states to 17455 states and 27397 transitions. [2022-11-21 17:34:00,345 INFO L78 Accepts]: Start accepts. Automaton has 17455 states and 27397 transitions. Word has length 194 [2022-11-21 17:34:00,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:34:00,345 INFO L495 AbstractCegarLoop]: Abstraction has 17455 states and 27397 transitions. [2022-11-21 17:34:00,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (21), 8 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-21 17:34:00,345 INFO L276 IsEmpty]: Start isEmpty. Operand 17455 states and 27397 transitions. [2022-11-21 17:34:00,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-21 17:34:00,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:34:00,351 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:34:00,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:34:00,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:34:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:34:00,352 INFO L85 PathProgramCache]: Analyzing trace with hash 527027950, now seen corresponding path program 2 times [2022-11-21 17:34:00,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:34:00,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934329486] [2022-11-21 17:34:00,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:34:00,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:34:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:34:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:02,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:34:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:02,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:34:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:34:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:34:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:34:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 17:34:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 17:34:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:34:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 17:34:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 17:34:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 17:34:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-21 17:34:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:34:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934329486] [2022-11-21 17:34:03,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934329486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:34:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609394237] [2022-11-21 17:34:03,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:34:03,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:34:03,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:34:03,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:34:03,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:34:04,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:34:04,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:34:04,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 3643 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-21 17:34:04,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:34:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-21 17:34:04,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:34:04,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609394237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:34:04,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:34:04,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 12 [2022-11-21 17:34:04,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674004588] [2022-11-21 17:34:04,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:34:04,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:34:04,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:34:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:34:04,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:34:04,885 INFO L87 Difference]: Start difference. First operand 17455 states and 27397 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 17:34:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:34:06,828 INFO L93 Difference]: Finished difference Result 34983 states and 58525 transitions. [2022-11-21 17:34:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:34:06,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 200 [2022-11-21 17:34:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:34:06,900 INFO L225 Difference]: With dead ends: 34983 [2022-11-21 17:34:06,900 INFO L226 Difference]: Without dead ends: 17563 [2022-11-21 17:34:06,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:34:06,976 INFO L413 NwaCegarLoop]: 1323 mSDtfsCounter, 6 mSDsluCounter, 5277 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6600 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:34:06,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 6600 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:34:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17563 states. [2022-11-21 17:34:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17563 to 17491. [2022-11-21 17:34:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17491 states, 12678 states have (on average 1.3024136299100804) internal successors, (16512), 12693 states have internal predecessors, (16512), 3465 states have call successors, (3465), 655 states have call predecessors, (3465), 1347 states have return successors, (7456), 4202 states have call predecessors, (7456), 3459 states have call successors, (7456) [2022-11-21 17:34:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17491 states to 17491 states and 27433 transitions. [2022-11-21 17:34:09,106 INFO L78 Accepts]: Start accepts. Automaton has 17491 states and 27433 transitions. Word has length 200 [2022-11-21 17:34:09,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:34:09,107 INFO L495 AbstractCegarLoop]: Abstraction has 17491 states and 27433 transitions. [2022-11-21 17:34:09,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 17:34:09,107 INFO L276 IsEmpty]: Start isEmpty. Operand 17491 states and 27433 transitions. [2022-11-21 17:34:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-21 17:34:09,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:34:09,113 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:34:09,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:34:09,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:34:09,327 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:34:09,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:34:09,327 INFO L85 PathProgramCache]: Analyzing trace with hash -496600462, now seen corresponding path program 3 times [2022-11-21 17:34:09,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:34:09,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632723949] [2022-11-21 17:34:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:34:09,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:34:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:34:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:34:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:10,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:34:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:34:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:34:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:34:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:34:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 17:34:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:34:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 17:34:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 17:34:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 17:34:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-21 17:34:11,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:34:11,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632723949] [2022-11-21 17:34:11,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632723949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:34:11,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438375562] [2022-11-21 17:34:11,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:34:11,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:34:11,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:34:11,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:34:11,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:34:13,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 17:34:13,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:34:13,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 3106 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-21 17:34:13,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:34:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-21 17:34:13,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:34:13,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438375562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:34:13,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:34:13,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 29 [2022-11-21 17:34:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257854727] [2022-11-21 17:34:13,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:34:13,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:34:13,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:34:13,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:34:13,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2022-11-21 17:34:13,784 INFO L87 Difference]: Start difference. First operand 17491 states and 27433 transitions. Second operand has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 11 states have internal predecessors, (119), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-21 17:34:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:34:17,703 INFO L93 Difference]: Finished difference Result 35818 states and 60440 transitions. [2022-11-21 17:34:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 17:34:17,704 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 11 states have internal predecessors, (119), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 4 states have call successors, (21) Word has length 200 [2022-11-21 17:34:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:34:17,776 INFO L225 Difference]: With dead ends: 35818 [2022-11-21 17:34:17,776 INFO L226 Difference]: Without dead ends: 18362 [2022-11-21 17:34:17,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=138, Invalid=1668, Unknown=0, NotChecked=0, Total=1806 [2022-11-21 17:34:17,845 INFO L413 NwaCegarLoop]: 2676 mSDtfsCounter, 1513 mSDsluCounter, 30693 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 33369 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:34:17,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 33369 Invalid, 638 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:34:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18362 states. [2022-11-21 17:34:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18362 to 18241. [2022-11-21 17:34:20,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18241 states, 13212 states have (on average 1.301014229488344) internal successors, (17189), 13227 states have internal predecessors, (17189), 3663 states have call successors, (3663), 655 states have call predecessors, (3663), 1365 states have return successors, (8037), 4418 states have call predecessors, (8037), 3657 states have call successors, (8037) [2022-11-21 17:34:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18241 states to 18241 states and 28889 transitions. [2022-11-21 17:34:20,401 INFO L78 Accepts]: Start accepts. Automaton has 18241 states and 28889 transitions. Word has length 200 [2022-11-21 17:34:20,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:34:20,402 INFO L495 AbstractCegarLoop]: Abstraction has 18241 states and 28889 transitions. [2022-11-21 17:34:20,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 11 states have internal predecessors, (119), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-21 17:34:20,402 INFO L276 IsEmpty]: Start isEmpty. Operand 18241 states and 28889 transitions. [2022-11-21 17:34:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-21 17:34:20,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:34:20,408 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:34:20,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:34:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:34:20,621 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:34:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:34:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1697904937, now seen corresponding path program 1 times [2022-11-21 17:34:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:34:20,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320407315] [2022-11-21 17:34:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:34:20,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:34:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:34:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:34:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:34:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:34:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:34:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 17:34:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:34:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:34:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 17:34:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-21 17:34:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-21 17:34:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-21 17:34:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 17:34:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-21 17:34:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-21 17:34:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:34:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-21 17:34:21,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:34:21,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320407315] [2022-11-21 17:34:21,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320407315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:34:21,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:34:21,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 17:34:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176779917] [2022-11-21 17:34:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:34:21,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:34:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:34:21,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:34:21,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:34:21,478 INFO L87 Difference]: Start difference. First operand 18241 states and 28889 transitions. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (26), 10 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-21 17:34:39,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:35:14,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:35:14,770 INFO L93 Difference]: Finished difference Result 61432 states and 108702 transitions. [2022-11-21 17:35:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-21 17:35:14,771 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (26), 10 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 205 [2022-11-21 17:35:14,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:35:14,970 INFO L225 Difference]: With dead ends: 61432 [2022-11-21 17:35:14,970 INFO L226 Difference]: Without dead ends: 43226 [2022-11-21 17:35:15,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=768, Invalid=3522, Unknown=0, NotChecked=0, Total=4290 [2022-11-21 17:35:15,043 INFO L413 NwaCegarLoop]: 1898 mSDtfsCounter, 8130 mSDsluCounter, 11886 mSDsCounter, 0 mSdLazyCounter, 16330 mSolverCounterSat, 7480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8332 SdHoareTripleChecker+Valid, 13784 SdHoareTripleChecker+Invalid, 23810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 7480 IncrementalHoareTripleChecker+Valid, 16330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:35:15,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8332 Valid, 13784 Invalid, 23810 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [7480 Valid, 16330 Invalid, 0 Unknown, 0 Unchecked, 42.4s Time] [2022-11-21 17:35:15,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43226 states. [2022-11-21 17:35:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43226 to 18261. [2022-11-21 17:35:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18261 states, 13224 states have (on average 1.300741076830006) internal successors, (17201), 13239 states have internal predecessors, (17201), 3671 states have call successors, (3671), 655 states have call predecessors, (3671), 1365 states have return successors, (8045), 4426 states have call predecessors, (8045), 3665 states have call successors, (8045) [2022-11-21 17:35:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18261 states to 18261 states and 28917 transitions. [2022-11-21 17:35:18,221 INFO L78 Accepts]: Start accepts. Automaton has 18261 states and 28917 transitions. Word has length 205 [2022-11-21 17:35:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:35:18,221 INFO L495 AbstractCegarLoop]: Abstraction has 18261 states and 28917 transitions. [2022-11-21 17:35:18,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 5 states have internal predecessors, (128), 3 states have call successors, (26), 10 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-21 17:35:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 18261 states and 28917 transitions. [2022-11-21 17:35:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-21 17:35:18,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:35:18,227 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:35:18,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:35:18,228 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:35:18,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:35:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1329388494, now seen corresponding path program 1 times [2022-11-21 17:35:18,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:35:18,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536619257] [2022-11-21 17:35:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:35:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:35:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:35:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:35:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:35:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:35:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:35:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:35:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:35:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 17:35:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:35:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 17:35:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 17:35:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 17:35:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-21 17:35:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-21 17:35:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-21 17:35:19,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:35:19,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536619257] [2022-11-21 17:35:19,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536619257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:35:19,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:35:19,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 17:35:19,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912264295] [2022-11-21 17:35:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:35:19,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:35:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:35:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:35:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:35:19,425 INFO L87 Difference]: Start difference. First operand 18261 states and 28917 transitions. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-21 17:35:27,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:35:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:35:47,931 INFO L93 Difference]: Finished difference Result 60942 states and 107596 transitions. [2022-11-21 17:35:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:35:47,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 230 [2022-11-21 17:35:47,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:35:48,121 INFO L225 Difference]: With dead ends: 60942 [2022-11-21 17:35:48,121 INFO L226 Difference]: Without dead ends: 42716 [2022-11-21 17:35:48,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:35:48,194 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 6296 mSDsluCounter, 5510 mSDsCounter, 0 mSdLazyCounter, 7000 mSolverCounterSat, 3555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6487 SdHoareTripleChecker+Valid, 6521 SdHoareTripleChecker+Invalid, 10555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3555 IncrementalHoareTripleChecker+Valid, 7000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:35:48,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6487 Valid, 6521 Invalid, 10555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3555 Valid, 7000 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2022-11-21 17:35:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42716 states. [2022-11-21 17:35:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42716 to 18305. [2022-11-21 17:35:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18305 states, 13250 states have (on average 1.3001509433962264) internal successors, (17227), 13279 states have internal predecessors, (17227), 3671 states have call successors, (3671), 655 states have call predecessors, (3671), 1383 states have return successors, (8109), 4430 states have call predecessors, (8109), 3665 states have call successors, (8109) [2022-11-21 17:35:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18305 states to 18305 states and 29007 transitions. [2022-11-21 17:35:51,465 INFO L78 Accepts]: Start accepts. Automaton has 18305 states and 29007 transitions. Word has length 230 [2022-11-21 17:35:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:35:51,466 INFO L495 AbstractCegarLoop]: Abstraction has 18305 states and 29007 transitions. [2022-11-21 17:35:51,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (22), 8 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-21 17:35:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 18305 states and 29007 transitions. [2022-11-21 17:35:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-21 17:35:51,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:35:51,472 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:35:51,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:35:51,472 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:35:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:35:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash 781654386, now seen corresponding path program 1 times [2022-11-21 17:35:51,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:35:51,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239302355] [2022-11-21 17:35:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:35:51,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:35:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:51,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:35:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:35:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:35:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:35:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 17:35:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:35:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 17:35:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 17:35:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:35:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:35:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 17:35:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-21 17:35:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-21 17:35:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-21 17:35:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-21 17:35:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-21 17:35:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-21 17:35:52,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:35:52,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239302355] [2022-11-21 17:35:52,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239302355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:35:52,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908522719] [2022-11-21 17:35:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:35:52,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:35:52,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:35:52,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:35:52,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:35:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:35:53,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 4179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:35:53,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:35:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-21 17:35:53,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:35:53,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908522719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:35:53,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:35:53,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-11-21 17:35:53,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254452911] [2022-11-21 17:35:53,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:35:53,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:35:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:35:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:35:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:35:53,957 INFO L87 Difference]: Start difference. First operand 18305 states and 29007 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 17:35:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:35:58,616 INFO L93 Difference]: Finished difference Result 24498 states and 38770 transitions. [2022-11-21 17:35:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:35:58,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 236 [2022-11-21 17:35:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:35:58,699 INFO L225 Difference]: With dead ends: 24498 [2022-11-21 17:35:58,699 INFO L226 Difference]: Without dead ends: 24481 [2022-11-21 17:35:58,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:35:58,712 INFO L413 NwaCegarLoop]: 2010 mSDtfsCounter, 2424 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:35:58,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2424 Valid, 2911 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:35:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24481 states. [2022-11-21 17:36:02,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24481 to 24451. [2022-11-21 17:36:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24451 states, 17690 states have (on average 1.2981345392877333) internal successors, (22964), 17741 states have internal predecessors, (22964), 4897 states have call successors, (4897), 877 states have call predecessors, (4897), 1863 states have return successors, (10851), 5912 states have call predecessors, (10851), 4891 states have call successors, (10851) [2022-11-21 17:36:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24451 states to 24451 states and 38712 transitions. [2022-11-21 17:36:02,585 INFO L78 Accepts]: Start accepts. Automaton has 24451 states and 38712 transitions. Word has length 236 [2022-11-21 17:36:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:36:02,586 INFO L495 AbstractCegarLoop]: Abstraction has 24451 states and 38712 transitions. [2022-11-21 17:36:02,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 17:36:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 24451 states and 38712 transitions. [2022-11-21 17:36:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-21 17:36:02,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:36:02,592 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:36:02,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:36:02,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b12a83f5-1df7-4736-b433-3a12a2ddb2c8/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:36:02,793 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:36:02,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:36:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash 808627288, now seen corresponding path program 1 times [2022-11-21 17:36:02,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:36:02,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390476914] [2022-11-21 17:36:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:36:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:36:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:36:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:36:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:36:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 17:36:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:36:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 17:36:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:36:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:36:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 17:36:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-21 17:36:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:36:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 17:36:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:36:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-21 17:36:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-21 17:36:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 17:36:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-21 17:36:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-21 17:36:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-21 17:36:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-21 17:36:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-11-21 17:36:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-21 17:36:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-21 17:36:04,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:36:04,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390476914] [2022-11-21 17:36:04,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390476914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:36:04,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:36:04,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:36:04,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782657696] [2022-11-21 17:36:04,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:36:04,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:36:04,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:36:04,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:36:04,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:36:04,590 INFO L87 Difference]: Start difference. First operand 24451 states and 38712 transitions. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 5 states have internal predecessors, (156), 3 states have call successors, (34), 9 states have call predecessors, (34), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-21 17:36:26,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:36:26,935 INFO L93 Difference]: Finished difference Result 59654 states and 106327 transitions. [2022-11-21 17:36:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:36:26,935 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 5 states have internal predecessors, (156), 3 states have call successors, (34), 9 states have call predecessors, (34), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 263 [2022-11-21 17:36:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:36:27,145 INFO L225 Difference]: With dead ends: 59654 [2022-11-21 17:36:27,145 INFO L226 Difference]: Without dead ends: 35238 [2022-11-21 17:36:27,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:36:27,259 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 4366 mSDsluCounter, 4391 mSDsCounter, 0 mSdLazyCounter, 4432 mSolverCounterSat, 2763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 7195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2763 IncrementalHoareTripleChecker+Valid, 4432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:36:27,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4412 Valid, 5380 Invalid, 7195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2763 Valid, 4432 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2022-11-21 17:36:27,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35238 states. [2022-11-21 17:36:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35238 to 24659. [2022-11-21 17:36:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24659 states, 17842 states have (on average 1.2982849456338976) internal successors, (23164), 17909 states have internal predecessors, (23164), 4897 states have call successors, (4897), 893 states have call predecessors, (4897), 1919 states have return successors, (11371), 5912 states have call predecessors, (11371), 4891 states have call successors, (11371) [2022-11-21 17:36:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24659 states to 24659 states and 39432 transitions. [2022-11-21 17:36:31,969 INFO L78 Accepts]: Start accepts. Automaton has 24659 states and 39432 transitions. Word has length 263 [2022-11-21 17:36:31,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:36:31,970 INFO L495 AbstractCegarLoop]: Abstraction has 24659 states and 39432 transitions. [2022-11-21 17:36:31,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 5 states have internal predecessors, (156), 3 states have call successors, (34), 9 states have call predecessors, (34), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-21 17:36:31,970 INFO L276 IsEmpty]: Start isEmpty. Operand 24659 states and 39432 transitions. [2022-11-21 17:36:31,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-21 17:36:31,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:36:31,977 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:36:31,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 17:36:31,978 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:36:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:36:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1235954813, now seen corresponding path program 1 times [2022-11-21 17:36:31,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:36:31,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293946448] [2022-11-21 17:36:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:36:31,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:36:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:36:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 17:36:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 17:36:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 17:36:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:36:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 17:36:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:36:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:36:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 17:36:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-21 17:36:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:36:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 17:36:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:36:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-21 17:36:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-11-21 17:36:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-21 17:36:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-21 17:36:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-21 17:36:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-21 17:36:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-21 17:36:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-11-21 17:36:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-21 17:36:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:36:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-21 17:36:32,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:36:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293946448] [2022-11-21 17:36:32,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293946448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:36:32,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:36:32,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:36:32,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823405210] [2022-11-21 17:36:32,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:36:32,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:36:32,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:36:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:36:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:36:32,914 INFO L87 Difference]: Start difference. First operand 24659 states and 39432 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (34), 8 states have call predecessors, (34), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-21 17:37:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:37:05,884 INFO L93 Difference]: Finished difference Result 82126 states and 153262 transitions. [2022-11-21 17:37:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:37:05,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (34), 8 states have call predecessors, (34), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 264 [2022-11-21 17:37:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:37:06,419 INFO L225 Difference]: With dead ends: 82126 [2022-11-21 17:37:06,419 INFO L226 Difference]: Without dead ends: 57502 [2022-11-21 17:37:06,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-21 17:37:06,552 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 5250 mSDsluCounter, 4336 mSDsCounter, 0 mSdLazyCounter, 5368 mSolverCounterSat, 3852 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5388 SdHoareTripleChecker+Valid, 5826 SdHoareTripleChecker+Invalid, 9220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3852 IncrementalHoareTripleChecker+Valid, 5368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:37:06,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5388 Valid, 5826 Invalid, 9220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3852 Valid, 5368 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2022-11-21 17:37:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57502 states.